How many years of comparable data are there for Austria and Hong Kong?

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.

Austria vs Hong Kong: Nitrous oxide (N2O) emissions from Transport (Energy) (Mt CO2e), per

Austria

0 Mt CO2e per US$ of GDP

in 2024

Hong Kong

0 Mt CO2e per US$ of GDP

in 2024

Austria rank

165th

Hong Kong rank

163rd

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

Austria
Hong Kong

How they compare

Hong Kong currently reports 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Austria, a difference of 0 Mt CO2e per US$ of GDP.

The two have swapped places 13 times across 55 shared years of data; in 1970 it was Austria ahead.

Austria ranks 165th and Hong Kong ranks 163rd of 191 countries.

Across the 6 decades both report, Austria averaged higher in 5 and Hong Kong in 1.

Head to head by decade

Decade	Austria	Hong Kong	Difference	Ahead
1970s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Austria
1980s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Austria
1990s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Hong Kong
2000s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Austria
2010s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Austria
2020s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Austria

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, Austria or Hong Kong?: Hong Kong, at 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Austria as of 2024.
What is the difference in nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per between Austria and Hong Kong?: 0 Mt CO2e per US$ of GDP, with Hong Kong ahead.
How many years of comparable data are there for Austria and Hong Kong?: 55 years are reported by both, from 1970 to 2024.
How do Austria and Hong Kong rank globally for nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per?: Austria ranks 165th and Hong Kong ranks 163rd 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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Austria vs Hong Kong: 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/austria/hong-kong-sar-china/

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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.