How many years of comparable data are there for Iraq and Sierra Leone?

55 years are reported by both, from 1970 to 2024.

Where does this data come from?

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

Iraq vs Sierra Leone: Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per

Iraq

0 Mt CO2e per US$ of GDP

in 2024

Sierra Leone

0 Mt CO2e per US$ of GDP

in 2024

Iraq rank

53rd

Sierra Leone rank

51st

Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per over time

Iraq
Sierra Leone

How they compare

Sierra Leone currently reports 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Iraq, a difference of 0 Mt CO2e per US$ of GDP.

The two have swapped places 3 times across 55 shared years of data; in 1970 it was Iraq ahead.

Iraq ranks 53rd and Sierra Leone ranks 51st of 191 countries.

Iraq has averaged higher in every one of the 6 decades both report.

Head to head by decade

Decade	Iraq	Sierra Leone	Difference	Ahead
1970s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Iraq
1980s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Iraq
1990s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Iraq
2000s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Iraq
2010s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Iraq
2020s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Iraq

Averages of every year both report within each decade.

Frequently asked questions

Which has higher nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per, Iraq or Sierra Leone?: Sierra Leone, at 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Iraq as of 2024.
What is the difference in nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per between Iraq and Sierra Leone?: 0 Mt CO2e per US$ of GDP, with Sierra Leone ahead.
How many years of comparable data are there for Iraq and Sierra Leone?: 55 years are reported by both, from 1970 to 2024.
How do Iraq and Sierra Leone rank globally for nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per?: Iraq ranks 53rd and Sierra Leone ranks 51st of 191 countries.
Where does this data come from?: Statizoid (derived), published as Nitrous oxide (N2O) emissions from Transport (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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Iraq vs Sierra Leone: Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per. Statizoid, drawing on Statizoid (derived). Retrieved 18 September 2026, from https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-transport-energy-mt-co2e-per-unit-of-gdp/iraq/sierra-leone/

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<a href="https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-transport-energy-mt-co2e-per-unit-of-gdp/iraq/sierra-leone/">Iraq vs Sierra Leone: Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per</a> — Statizoid

About this data

Indicator: Nitrous oxide (N2O) emissions from Transport (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: 18 September 2026

Nitrous oxide (N2O) emissions from Transport (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.