The pita gyro in 1990

Gyro price, net minimum wage and purchasing power for 1990, with its calculation and sources. Visitor reports are shown separately for comparison.

Index · classic gyros / month

483

Using the model's product rescaling

Wage · monthly equivalent

197.65 €

in 2026 prices: 828.84 €

Gross minimum by month: Jan-Aug €191.06, Sep-Dec €204.63. Year mean €195.59. After contributions, before income tax. Annual income divided by 12, using 14 payments throughout the series. Wage and contributions are twelve-month means. Purchasing power in classic gyros.

Minimum Wage: payments, contributions and the reconstruction comparison

The same wage, two comparisons

Period gyros

Price per gyro: 0.275 €
With the net minimum wage / month: 719

Series range: 0.206 € – 0.344 € · 94 GRD

The wrap of the period, at the historical series price. The price may be documented or estimated, as explained in the year’s sources.

Range from price bounds: 575–959 period gyros/month

How is it calculated?

Base series · period gyros/month · scenario start 1998

197.65 € ÷ 0.275 € ≈ 719 period gyros/month

After contributions, before income tax. Annual income divided by 12, using 14 payments throughout the series. Wage and contributions are twelve-month means. Purchasing power in period gyros.

The quotient is rounded to a whole number.

Only the price varies within its published bounds. Wage and composition stay fixed. This is neither a total uncertainty range nor a statistical confidence interval. Bounds come from the model's selected percentage band.

Geometric interpolation

Interpolation between the inputs for 1989 and 1998, using the CPI path identified by the calculation rule.

Anchors used by the calculation: 1989 1998

The era view applies no meat-weight or composition rescaling to a classic product.

What do the sources support?

C: Interpolated between model anchors

Categories describe how the price enters the model. They do not certify original-source verification, representative sampling or historical product composition.

Price, date, place, composition Original sources for the year From source to price

Selected-series data · 2026.10.10-monthly-bulletin

Classic gyros

Price per gyro: 0.409 €
With the net minimum wage / month: 483

Rescaled to a common reference product with 88 g of gyro meat and fries. A calculated price, not a second observed shop price.

Range from price bounds: 386–645 classic gyros/month

How is it calculated?

Base series · classic gyros/month · scenario start 1998

197.65 € ÷ 0.409 € ≈ 483 classic gyros/month

After contributions, before income tax. Annual income divided by 12, using 14 payments throughout the series. Wage and contributions are twelve-month means. Purchasing power in classic gyros.

The quotient is rounded to a whole number.

Geometric interpolation

Interpolation between the inputs for 1989 and 1998, using the CPI path identified by the calculation rule.

Anchors used by the calculation: 1989 1998

Product rescaling

0.275 € × 1.488 ≈ 0.409 €

Model / reference grams:: 60 / 88
Meat-component weight:: 70%
Fries input in the composition component:: 0%
Non-meat base / meat-component cap:: 0.65 / 1.35

Historical meat weights and changes in composition are model assumptions, not a series of market measurements. The assumed peak and decline in portion size need verification. The present-day weight defines the reference product. The era price refers to the wrap sold at the time; the classic price and weight-adjusted index depend on these assumptions.

What do the sources support?

C: Interpolated between model anchors

Categories describe how the price enters the model. They do not certify original-source verification, representative sampling or historical product composition.

Price, date, place, composition Original sources for the year From source to price

Selected-series data · 2026.10.10-monthly-bulletin

Both prices are expressed in money of the same year. Classic rescaling adjusts composition, not inflation.

What does the comparison assume?

Compare 1990 with another year

Period and classic gyro prices, wage and purchasing power, with downloadable image and CSV.

Comparison year

Compare: 1990 → 2026

Which findings hold up?

We combine 2 wage bases, 4 historical-price choices and 7 composition specifications across 50 completed years, 1976–2025.

Counts are not probabilities. Payroll reconstruction remains under review. Portion scenarios are not measurements; geography and sale channel stay fixed.

Period gyros

8 distinct combinations. Portion assumptions do not affect this measure.

1990 rank: 8–9 out of 50 years.

Rank one is the highest purchasing power. Published baseline: rank 8.

Minimum–maximum across cases: ≈718–719 per month.

Extremes of the selected specifications, not an uncertainty interval. Ranks precede rounding of displayed counts.

1990 remains above 1976 in every selected case.

Separate and joint peak tests

Peak years by test family
Vary	Cases	Peak years
Prices only	4	1982, 1984
Wage only	2	1982
Composition only	1	1982
Joint	8	1982, 1984

Separate tests keep other assumptions at the published baseline. Groups overlap and must not be added together.

One example combination for each peak year

1982: Published income · Published baseline
1984: Published income · Without the 1983 price

Classic equivalents

56 distinct combinations.

1990 rank: 3–9 out of 50 years.

Rank one is the highest purchasing power. Published baseline: rank 4.

Minimum–maximum across cases: ≈414–644 per month.

Extremes of the selected specifications, not an uncertainty interval. Ranks precede rounding of displayed counts.

1990 remains above 1976 in every selected case.

Separate and joint peak tests

Peak years by test family
Vary	Cases	Peak years
Prices only	4	1985, 1989
Wage only	2	1989
Composition only	7	1982, 1985, 1989
Joint	56	1982, 1984, 1985, 1989

Separate tests keep other assumptions at the published baseline. Groups overlap and must not be added together.

One example combination for each peak year

1982: Published income · Published baseline · Reference meat weight in every year
1984: Published income · Without the 1983 price · Reference meat weight in every year
1985: Published income · Published baseline · Historical meat -20%
1989: Published income · Published baseline · Baseline composition

Specifications and how to verify the result

Wage

Published income
Payroll reconstruction under review

Price

Published baseline
Without the 1983 price
Without the 1984 price
Without either price

Composition

Baseline composition
Historical meat -20%
Historical meat +20%
Reference meat weight in every year
Meat value share 50%
Meat value share 90%
No non-meat composition gap

JSON includes parameters, inputs, public citations and every case by year. CSV contains the same calculations. With Node 24, the standalone program checks the arithmetic without packages, network or private repository access. Arithmetic reproduction does not certify historical sources.

node reproduce-joint-v1.mjs joint-robustness-2026-09-14.json

JSON CSV Reproduction program

joint-robustness-v1 · 2026.09.26-mean-wage-source

Source and product tests Wage-basis evidence

Where this figure comes from

Geometric interpolation. Interpolation between the inputs for 1989 and 1998, using the CPI path identified by the calculation rule.

The era price is an input or calculation in the series. Comparison in classic gyros adds assumptions about weight and composition.

What the sources support Follow the price calculation

CInterpolated between model anchorsWage: 4 A / 8 B monthsNo fries insideSkewer (estimate): 0.20 €

Categories describe how the price enters the model. They do not certify original-source verification, representative sampling or historical product composition.

Detailed evidence and calculation

What is supported for this year

We examine price, date, place and product composition separately. Evidence for the price does not establish historical meat weights.

Calculation reviewed, sources not newly verified · 8 Sept 2026

Price: The price is calculated between the 1989 and 1998 anchors. It is not an independent market observation for this year. Weights use catering CPI, with general CPI where the sector series is unavailable.
Date: The year identifies a point in the calculated series, not a newly collected price. Dating uncertainty in the anchor sources carries into the calculation.
Geography: Interpolation adds no shops or regions to the sample. It inherits the geographical coverage and assumptions of its anchors.
Composition: Historical meat weights and changes in composition are model assumptions, not a series of market measurements. The assumed peak and decline in portion size need verification. The present-day weight defines the reference product. The era price refers to the wrap sold at the time; the classic price and weight-adjusted index depend on these assumptions.

Calculation anchors:

See sources for this year

From source to series price

A source entry is not always the final price. These are the inputs retained by the model, without implying fresh verification of the original.

1. Amount before rescaling
Not separately recorded
The recorded original amount before any rescaling. It may be a regulated ceiling or composite input, not an individual purchase.
2. Model input
No anchor for this year
The price is calculated from other years and series rules. It is not presented as a new observation.
3. Period price in the series
0.275 €
The final price used for period purchasing power. Classic composition rescaling is a separate subsequent step.

In some years an anchor constrains the range rather than replacing the calculated price. Historical amounts use the fixed drachma-to-euro conversion, without inflation adjustment.

Sources and limitations for this year

How the number is produced

Every figure with the formula that produces it and its source. Nothing is written by hand.

The wage

Gross, per payment: 195.59 €
Gross in drachmas: 66,645.667 GRD
Employee contributions: 13.38%
Net, per payment: netPerPayment = gross × (1 − contributionRate)169.41 €
Payments per year: 14
Net, on a 12-month basis: netEur = netPerPayment × payments ÷ 12197.65 €

Gyronomics - monthly wage and contribution register 1976–1993

Legal acts of the period: National General Collective Labour Agreement - minimum wage floorsThe series wage is the 12-month mean of the monthly register, not an amount in an act. The archive link leads to the 1990 agreement on taxheaven.gr, not to the Gazette text of each year's act. The acts the register reads for each month are published in the payroll_evidence field of data.json.

The price

Price(derived): 0.275 €
In drachmas: 94 GRD
Uncertainty range(−25.09% / +25.09%): 0.206 € - 0.344 €
Method: geometric-interpolation-1989-1998-catering-cpi-with-general-fallback

Bank of Greece / ELSTAT - Consumer Price Index

The index

Index: index = round(netSalary / pitaPrice)719
Change vs previous year: -49
In the hypothetical scenario(general): 719
Wage in today's prices: real = net × (CPI_2026 / CPI_year)828.84 €

How to cite it

Every figure above carries the formula that produces it and its source.

Rescaling scenario: Base series (anchors, estimates and derived prices)

Sources for this year

Citations

Reproduce this calculationWrapped pita gyro

The series wage is the 12-month mean of the monthly register, not an amount in an act. The archive link leads to the 1990 agreement on taxheaven.gr, not to the Gazette text of each year's act. The acts the register reads for each month are published in the payroll_evidence field of data.json.

What if the portion were different?

Only the assumed meat weight changes. The period price, wage and all other assumptions stay fixed.

−20% meat

0.477 €

per classic gyro

414 classic gyros / month

Baseline model

0.409 €

per classic gyro

483 classic gyros / month

+20% meat

0.358 €

per classic gyro

552 classic gyros / month

Period purchasing power stays at 719 gyros per month in every scenario. The classic comparison changes because it depends on composition.

Selected stress tests for 1990–2010, not new measurements or a statistical confidence interval. They do not jointly test price, date and geographic uncertainty.

Explore composition assumptions for this year

Visitor reports

Loading visitor reports…

Visitor reports are an independent comparison layer and do not affect the index.

The pita gyro in 1990

The same wage, two comparisons

Period gyros

Classic gyros

Compare 1990 with another year

Which findings hold up?

Period gyros

Classic equivalents

Wage

Price

Composition

Where this figure comes from

What is supported for this year

From source to series price

1. Amount before rescaling

2. Model input

3. Period price in the series

How the number is produced

The wage

The price

The index

How to cite it

Sources for this year

What if the portion were different?

−20% meat

Baseline model

+20% meat

Visitor reports