How many years of comparable data are there for Portugal and Slovakia?

35 years are reported by both, from 1990 to 2024.

Where does this data come from?

Statizoid (derived), published as Nitrous oxide (N2O) emissions from Industrial Combustion (Energy) (Mt CO2e), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Portugal vs Slovakia: Nitrous oxide (N2O) emissions from Industrial Combustion (Energy) (Mt)

Portugal

0 Mt CO2e per US$ of GDP

in 2024

Slovakia

0 Mt CO2e per US$ of GDP

in 2024

Portugal rank

63rd

Slovakia rank

62nd

Nitrous oxide (N2O) emissions from Industrial Combustion (Energy) (Mt) over time

Portugal
Slovakia

How they compare

Slovakia currently reports 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Portugal, a difference of 0 Mt CO2e per US$ of GDP.

The two have swapped places 4 times across 35 shared years of data; in 1990 it was Slovakia ahead.

Portugal ranks 63rd and Slovakia ranks 62nd of 191 countries.

Slovakia has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	Portugal	Slovakia	Difference	Ahead
1990s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Slovakia
2000s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Slovakia
2010s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Slovakia
2020s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Slovakia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher nitrous oxide (n2o) emissions from industrial combustion (energy) (mt), Portugal or Slovakia?: Slovakia, at 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Portugal as of 2024.
What is the difference in nitrous oxide (n2o) emissions from industrial combustion (energy) (mt) between Portugal and Slovakia?: 0 Mt CO2e per US$ of GDP, with Slovakia ahead.
How many years of comparable data are there for Portugal and Slovakia?: 35 years are reported by both, from 1990 to 2024.
How do Portugal and Slovakia rank globally for nitrous oxide (n2o) emissions from industrial combustion (energy) (mt)?: Portugal ranks 63rd and Slovakia ranks 62nd of 191 countries.
Where does this data come from?: Statizoid (derived), published as Nitrous oxide (N2O) emissions from Industrial Combustion (Energy) (Mt CO2e), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Portugal vs Slovakia: Nitrous oxide (N2O) emissions from Industrial Combustion (Energy) (Mt). Statizoid, drawing on Statizoid (derived). Retrieved 19 September 2026, from https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-industrial-combustion-energy-mt-co2e-per-unit-of-gdp/portugal/slovak-republic/

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<a href="https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-industrial-combustion-energy-mt-co2e-per-unit-of-gdp/portugal/slovak-republic/">Portugal vs Slovakia: Nitrous oxide (N2O) emissions from Industrial Combustion (Energy) (Mt)</a> — Statizoid

About this data

Indicator: Nitrous oxide (N2O) emissions from Industrial Combustion (Energy) (Mt CO2e), per unit of GDP
Unit: Mt CO2e per US$ of GDP
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 238 places, 12,139 data points, 1970–2024
Last refreshed: 19 September 2026

Nitrous oxide (N2O) emissions from Industrial Combustion (Energy) (Mt CO2e) divided by GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.