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

45 years are reported by both, from 1980 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.

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

Hong Kong

0 Mt CO2e per US$ of GDP

in 2024

Saint Lucia

0 Mt CO2e per US$ of GDP

in 2024

Hong Kong rank

163rd

Saint Lucia rank

164th

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

Hong Kong
Saint Lucia

How they compare

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

The two have swapped places 6 times across 45 shared years of data; in 1980 it was Hong Kong ahead.

Hong Kong ranks 163rd and Saint Lucia ranks 164th of 191 countries.

Across the 5 decades both report, Hong Kong averaged higher in 3 and Saint Lucia in 2.

Head to head by decade

Decade	Hong Kong	Saint Lucia	Difference	Ahead
1980s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Hong Kong
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	Hong Kong
2010s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Saint Lucia
2020s	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	0 Mt CO2e per US$ of GDP	Saint Lucia

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, Hong Kong or Saint Lucia?: Hong Kong, at 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Saint Lucia as of 2024.
What is the difference in nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per between Hong Kong and Saint Lucia?: 0 Mt CO2e per US$ of GDP, with Hong Kong ahead.
How many years of comparable data are there for Hong Kong and Saint Lucia?: 45 years are reported by both, from 1980 to 2024.
How do Hong Kong and Saint Lucia rank globally for nitrous oxide (n2o) emissions from transport (energy) (mt co2e), per?: Hong Kong ranks 163rd and Saint Lucia ranks 164th 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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Hong Kong vs Saint Lucia: 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/hong-kong-sar-china/st-lucia/

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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.