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

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 Waste (Mt CO2e), per capita. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Hong Kong vs Tonga: Nitrous oxide (N2O) emissions from Waste (Mt CO2e), per capita

Hong Kong

0 Mt CO2e per person

in 2024

Tonga

0 Mt CO2e per person

in 2024

Hong Kong rank

37th

Tonga rank

40th

Nitrous oxide (N2O) emissions from Waste (Mt CO2e), per capita over time

Hong Kong
Tonga

How they compare

Hong Kong currently reports 0 Mt CO2e per person against 0 Mt CO2e per person in Tonga, a difference of 0 Mt CO2e per person.

Across all 55 years both countries report, Hong Kong has been ahead every year.

Hong Kong ranks 37th and Tonga ranks 40th of 203 countries.

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

Head to head by decade

Decade	Hong Kong	Tonga	Difference	Ahead
1970s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Hong Kong
1980s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Hong Kong
1990s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Hong Kong
2000s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Hong Kong
2010s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Hong Kong
2020s	0 Mt CO2e per person	0 Mt CO2e per person	0 Mt CO2e per person	Hong Kong

Averages of every year both report within each decade.

Frequently asked questions

Which has higher nitrous oxide (n2o) emissions from waste (mt co2e), per capita, Hong Kong or Tonga?: Hong Kong, at 0 Mt CO2e per person against 0 Mt CO2e per person in Tonga as of 2024.
What is the difference in nitrous oxide (n2o) emissions from waste (mt co2e), per capita between Hong Kong and Tonga?: 0 Mt CO2e per person, with Hong Kong ahead.
How many years of comparable data are there for Hong Kong and Tonga?: 55 years are reported by both, from 1970 to 2024.
How do Hong Kong and Tonga rank globally for nitrous oxide (n2o) emissions from waste (mt co2e), per capita?: Hong Kong ranks 37th and Tonga ranks 40th of 203 countries.
Where does this data come from?: Statizoid (derived), published as Nitrous oxide (N2O) emissions from Waste (Mt CO2e), per capita. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Individual pages

Share, cite or embed this page

Cite this page

Hong Kong vs Tonga: Nitrous oxide (N2O) emissions from Waste (Mt CO2e), per capita. Statizoid, drawing on Statizoid (derived). Retrieved 18 September 2026, from https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-waste-mt-co2e-per-capita/hong-kong-sar-china/tonga/

Embed or link this data

Paste this into a page to link back to these figures. The data itself is free to reuse under Derived by Statizoid from the sources named on the page; please keep the attribution.

<a href="https://environment.statizoid.com/compare/nitrous-oxide-n2o-emissions-from-waste-mt-co2e-per-capita/hong-kong-sar-china/tonga/">Hong Kong vs Tonga: Nitrous oxide (N2O) emissions from Waste (Mt CO2e), per capita</a> — Statizoid

About this data

Indicator: Nitrous oxide (N2O) emissions from Waste (Mt CO2e), per capita
Unit: Mt CO2e per person
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 250 places, 13,750 data points, 1970–2024
Last refreshed: 18 September 2026

Nitrous oxide (N2O) emissions from Waste (Mt CO2e) divided by Population, total, matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.