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

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

Where does this data come from?

Statizoid (derived), published as Methane (CH4) 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 Iceland: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per unit

Hong Kong

0 Mt CO2e per US$ of GDP

in 2024

Iceland

0 Mt CO2e per US$ of GDP

in 2024

Hong Kong rank

173rd

Iceland rank

171st

Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per unit over time

Hong Kong
Iceland

How they compare

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

The two have swapped places 2 times across 55 shared years of data; in 1970 it was Iceland ahead.

Hong Kong ranks 173rd and Iceland ranks 171st of 191 countries.

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

Head to head by decade

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

Averages of every year both report within each decade.

Frequently asked questions

Which has higher methane (ch4) emissions from transport (energy) (mt co2e), per unit, Hong Kong or Iceland?: Iceland, at 0 Mt CO2e per US$ of GDP against 0 Mt CO2e per US$ of GDP in Hong Kong as of 2024.
What is the difference in methane (ch4) emissions from transport (energy) (mt co2e), per unit between Hong Kong and Iceland?: 0 Mt CO2e per US$ of GDP, with Iceland ahead.
How many years of comparable data are there for Hong Kong and Iceland?: 55 years are reported by both, from 1970 to 2024.
How do Hong Kong and Iceland rank globally for methane (ch4) emissions from transport (energy) (mt co2e), per unit?: Hong Kong ranks 173rd and Iceland ranks 171st of 191 countries.
Where does this data come from?: Statizoid (derived), published as Methane (CH4) 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 Iceland: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per unit. Statizoid, drawing on Statizoid (derived). Retrieved 21 September 2026, from https://environment.statizoid.com/compare/methane-ch4-emissions-from-transport-energy-mt-co2e-per-unit-of-gdp/hong-kong-sar-china/iceland/

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<a href="https://environment.statizoid.com/compare/methane-ch4-emissions-from-transport-energy-mt-co2e-per-unit-of-gdp/hong-kong-sar-china/iceland/">Hong Kong vs Iceland: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per unit</a> — Statizoid

About this data

Indicator: Methane (CH4) 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: 21 September 2026

Methane (CH4) 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.