What is the difference in ippu — emissions (ch4), per unit of gdp between Portugal and San Marino?

0 kt per US$ of GDP, with San Marino ahead.

How many years of comparable data are there for Portugal and San Marino?

27 years are reported by both, from 1997 to 2023.

Where does this data come from?

Statizoid (derived), published as IPPU — Emissions (CH4), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Portugal vs San Marino: IPPU — Emissions (CH4), per unit of GDP

Portugal

0 kt per US$ of GDP

in 2023

San Marino

0 kt per US$ of GDP

in 2023

Portugal rank

73rd

San Marino rank

72nd

IPPU — Emissions (CH4), per unit of GDP over time

Portugal
San Marino

How they compare

San Marino currently reports 0 kt per US$ of GDP against 0 kt per US$ of GDP in Portugal, a difference of 0 kt per US$ of GDP.

The two have swapped places 7 times across 27 shared years of data; in 1997 it was Portugal ahead.

Portugal ranks 73rd and San Marino ranks 72nd of 119 countries.

Across the 4 decades both report, Portugal averaged higher in 3 and San Marino in 1.

Head to head by decade

Decade	Portugal	San Marino	Difference	Ahead
1990s	0 kt per US$ of GDP	0 kt per US$ of GDP	0 kt per US$ of GDP	Portugal
2000s	0 kt per US$ of GDP	0 kt per US$ of GDP	0 kt per US$ of GDP	Portugal
2010s	0 kt per US$ of GDP	0 kt per US$ of GDP	0 kt per US$ of GDP	San Marino
2020s	0 kt per US$ of GDP	0 kt per US$ of GDP	0 kt per US$ of GDP	Portugal

Averages of every year both report within each decade.

Frequently asked questions

Which has higher ippu — emissions (ch4), per unit of gdp, Portugal or San Marino?: San Marino, at 0 kt per US$ of GDP against 0 kt per US$ of GDP in Portugal as of 2023.
What is the difference in ippu — emissions (ch4), per unit of gdp between Portugal and San Marino?: 0 kt per US$ of GDP, with San Marino ahead.
How many years of comparable data are there for Portugal and San Marino?: 27 years are reported by both, from 1997 to 2023.
How do Portugal and San Marino rank globally for ippu — emissions (ch4), per unit of gdp?: Portugal ranks 73rd and San Marino ranks 72nd of 119 countries.
Where does this data come from?: Statizoid (derived), published as IPPU — Emissions (CH4), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Portugal vs San Marino: IPPU — Emissions (CH4), per unit of GDP. Statizoid, drawing on Statizoid (derived). Retrieved 23 September 2026, from https://climate.statizoid.com/compare/ippu-emissions-ch4-per-unit-of-gdp/portugal/san-marino/

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<a href="https://climate.statizoid.com/compare/ippu-emissions-ch4-per-unit-of-gdp/portugal/san-marino/">Portugal vs San Marino: IPPU — Emissions (CH4), per unit of GDP</a> — Statizoid

About this data

Indicator: IPPU — Emissions (CH4), per unit of GDP
Unit: kt per US$ of GDP
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 120 places, 6,317 data points, 1961–2023
Last refreshed: 23 September 2026

IPPU — Emissions (CH4) divided by GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.