How many years of comparable data are there for Bulgaria and Greece?

54 years are reported by both, from 1970 to 2023.

Where does this data come from?

Statizoid (derived), published as Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Bulgaria vs Greece: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square

Bulgaria

0 Mt CO2e per square kilometre

in 2023

Greece

0 Mt CO2e per square kilometre

in 2023

Bulgaria rank

65th

Greece rank

63rd

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

Bulgaria
Greece

How they compare

Greece currently reports 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Bulgaria, a difference of 0 Mt CO2e per square kilometre.

That makes Greece's figure about 1.1 times Bulgaria's.

The two have swapped places 3 times across 54 shared years of data; in 1970 it was Bulgaria ahead.

Bulgaria ranks 65th and Greece ranks 63rd of 194 countries.

Across the 6 decades both report, Bulgaria averaged higher in 1 and Greece in 5.

Head to head by decade

Decade	Bulgaria	Greece	Difference	Ahead
1970s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Bulgaria
1980s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Greece
1990s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Greece
2000s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Greece
2010s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Greece
2020s	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	0 Mt CO2e per square kilometre	Greece

Averages of every year both report within each decade.

Frequently asked questions

Which has higher methane (ch4) emissions from transport (energy) (mt co2e), per square, Bulgaria or Greece?: Greece, at 0 Mt CO2e per square kilometre against 0 Mt CO2e per square kilometre in Bulgaria as of 2023.
What is the difference in methane (ch4) emissions from transport (energy) (mt co2e), per square between Bulgaria and Greece?: 0 Mt CO2e per square kilometre, with Greece ahead.
How many years of comparable data are there for Bulgaria and Greece?: 54 years are reported by both, from 1970 to 2023.
How do Bulgaria and Greece rank globally for methane (ch4) emissions from transport (energy) (mt co2e), per square?: Bulgaria ranks 65th and Greece ranks 63rd of 194 countries.
Where does this data come from?: Statizoid (derived), published as Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Bulgaria vs Greece: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square. Statizoid, drawing on Statizoid (derived). Retrieved 21 September 2026, from https://environment.statizoid.com/compare/methane-ch4-emissions-from-transport-energy-mt-co2e-per-square-kilometre/bulgaria/greece/

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<a href="https://environment.statizoid.com/compare/methane-ch4-emissions-from-transport-energy-mt-co2e-per-square-kilometre/bulgaria/greece/">Bulgaria vs Greece: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square</a> — Statizoid

About this data

Indicator: Methane (CH4) emissions from Transport (Energy) (Mt CO2e), per square kilometre
Unit: Mt CO2e per square kilometre
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 241 places, 12,381 data points, 1970–2023
Last refreshed: 21 September 2026

Methane (CH4) emissions from Transport (Energy) (Mt CO2e) divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.