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

27 years are reported by both, from 1995 to 2021.

Where does this data come from?

Statizoid (derived), published as Adjusted net national income (constant 2015 US$), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

IBRD only vs Tonga: Adjusted net national income (constant 2015 US$), per unit of GDP

IBRD only

0.6894 constant 2015 US$ per US$ of GDP

in 2021

Tonga

0.8399 constant 2015 US$ per US$ of GDP

in 2021

IBRD only rank

27th

Tonga rank

28th

Adjusted net national income (constant 2015 US$), per unit of GDP over time

IBRD only
Tonga

How they compare

Tonga currently reports 0.8399 constant 2015 US$ per US$ of GDP against 0.6894 constant 2015 US$ per US$ of GDP in IBRD only, a difference of 0.1505 constant 2015 US$ per US$ of GDP.

That makes Tonga's figure about 1.2 times IBRD only's.

Across all 27 years both countries report, Tonga has been ahead every year.

IBRD only ranks 27th and Tonga ranks 28th of 36 groups.

Tonga has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	IBRD only	Tonga	Difference	Ahead
1990s	1.37 constant 2015 US$ per US$ of GDP	1.82 constant 2015 US$ per US$ of GDP	0.4542 constant 2015 US$ per US$ of GDP	Tonga
2000s	1.15 constant 2015 US$ per US$ of GDP	1.6 constant 2015 US$ per US$ of GDP	0.4501 constant 2015 US$ per US$ of GDP	Tonga
2010s	0.7503 constant 2015 US$ per US$ of GDP	0.951 constant 2015 US$ per US$ of GDP	0.2007 constant 2015 US$ per US$ of GDP	Tonga
2020s	0.73 constant 2015 US$ per US$ of GDP	0.9018 constant 2015 US$ per US$ of GDP	0.1718 constant 2015 US$ per US$ of GDP	Tonga

Averages of every year both report within each decade.

Frequently asked questions

Which has higher adjusted net national income (constant 2015 us$), per unit of gdp, IBRD only or Tonga?: Tonga, at 0.8399 constant 2015 US$ per US$ of GDP against 0.6894 constant 2015 US$ per US$ of GDP in IBRD only as of 2021.
What is the difference in adjusted net national income (constant 2015 us$), per unit of gdp between IBRD only and Tonga?: 0.1505 constant 2015 US$ per US$ of GDP, with Tonga ahead.
How many years of comparable data are there for IBRD only and Tonga?: 27 years are reported by both, from 1995 to 2021.
How do IBRD only and Tonga rank globally for adjusted net national income (constant 2015 us$), per unit of gdp?: IBRD only ranks 27th and Tonga ranks 28th of 36 groups.
Where does this data come from?: Statizoid (derived), published as Adjusted net national income (constant 2015 US$), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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IBRD only vs Tonga: Adjusted net national income (constant 2015 US$), per unit of GDP. Statizoid, drawing on Statizoid (derived). Retrieved 11 October 2026, from https://economy.statizoid.com/compare/adjusted-net-national-income-constant-2015-us-per-unit-of-gdp/ibrd-only/tonga/

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<a href="https://economy.statizoid.com/compare/adjusted-net-national-income-constant-2015-us-per-unit-of-gdp/ibrd-only/tonga/">IBRD only vs Tonga: Adjusted net national income (constant 2015 US$), per unit of GDP</a> — Statizoid

About this data

Indicator: Adjusted net national income (constant 2015 US$), per unit of GDP
Unit: constant 2015 US$ per US$ of GDP
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 187 places, 6,339 data points, 1970–2021
Last refreshed: 30 September 2026

Adjusted net national income (constant 2015 US$) divided by GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.