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

49 years are reported by both, from 1975 to 2023.

Where does this data come from?

Statizoid (derived), published as Swine, breeding — Manure applied to soils that leaches (N content), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Samoa vs Tonga: Swine, breeding — Manure applied to soils that leaches (N content)

Samoa

0 kg per US$ of GDP

in 2023

Tonga

0.0001 kg per US$ of GDP

in 2023

Samoa rank

6th

Tonga rank

4th

Swine, breeding — Manure applied to soils that leaches (N content) over time

Samoa
Tonga

How they compare

Tonga currently reports 0.0001 kg per US$ of GDP against 0 kg per US$ of GDP in Samoa, a difference of 0.0001 kg per US$ of GDP.

That makes Tonga's figure about 1.6 times Samoa's.

The two have swapped places 4 times across 49 shared years of data; in 1975 it was Tonga ahead.

Samoa ranks 6th and Tonga ranks 4th of 149 countries.

Across the 6 decades both report, Samoa averaged higher in 3 and Tonga in 3.

Head to head by decade

Decade	Samoa	Tonga	Difference	Ahead
1970s	0.0003 kg per US$ of GDP	0.0011 kg per US$ of GDP	0.0008 kg per US$ of GDP	Tonga
1980s	0.0006 kg per US$ of GDP	0.0007 kg per US$ of GDP	0.0001 kg per US$ of GDP	Tonga
1990s	0.0005 kg per US$ of GDP	0.0003 kg per US$ of GDP	0.0002 kg per US$ of GDP	Samoa
2000s	0.0003 kg per US$ of GDP	0.0002 kg per US$ of GDP	0.0001 kg per US$ of GDP	Samoa
2010s	0.0001 kg per US$ of GDP	0.0001 kg per US$ of GDP	0 kg per US$ of GDP	Samoa
2020s	0.0001 kg per US$ of GDP	0.0001 kg per US$ of GDP	0 kg per US$ of GDP	Tonga

Averages of every year both report within each decade.

Frequently asked questions

Which has higher swine, breeding — manure applied to soils that leaches (n content), Samoa or Tonga?: Tonga, at 0.0001 kg per US$ of GDP against 0 kg per US$ of GDP in Samoa as of 2023.
What is the difference in swine, breeding — manure applied to soils that leaches (n content) between Samoa and Tonga?: 0.0001 kg per US$ of GDP, with Tonga ahead.
How many years of comparable data are there for Samoa and Tonga?: 49 years are reported by both, from 1975 to 2023.
How do Samoa and Tonga rank globally for swine, breeding — manure applied to soils that leaches (n content)?: Samoa ranks 6th and Tonga ranks 4th of 149 countries.
Where does this data come from?: Statizoid (derived), published as Swine, breeding — Manure applied to soils that leaches (N content), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Samoa vs Tonga: Swine, breeding — Manure applied to soils that leaches (N content). Statizoid, drawing on Statizoid (derived). Retrieved 02 October 2026, from https://environment.statizoid.com/compare/swine-breeding-manure-applied-to-soils-that-leaches-n-content-per-unit-of-gdp/samoa/tonga/

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<a href="https://environment.statizoid.com/compare/swine-breeding-manure-applied-to-soils-that-leaches-n-content-per-unit-of-gdp/samoa/tonga/">Samoa vs Tonga: Swine, breeding — Manure applied to soils that leaches (N content)</a> — Statizoid

About this data

Indicator: Swine, breeding — Manure applied to soils that leaches (N content), per unit of GDP
Unit: kg per US$ of GDP
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 151 places, 8,190 data points, 1961–2023
Last refreshed: 28 September 2026

Swine, breeding — Manure applied to soils that leaches (N content) divided by GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.