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

11 years are reported by both, from 1960 to 2010.

Where does this data come from?

Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/, published as Barro-Lee: Average years of primary schooling, age 75+, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Luxembourg vs Tonga: Barro-Lee: Average years of primary schooling, age 75+, total

Luxembourg

5.54

in 2010

Tonga

5.34

in 2010

Luxembourg rank

23rd

Tonga rank

26th

Barro-Lee: Average years of primary schooling, age 75+, total over time

Luxembourg
Tonga

How they compare

Luxembourg currently reports 5.54 against 5.34 in Tonga, a difference of 0.2.

The two have swapped places 4 times across 11 shared years of data; in 1960 it was Luxembourg ahead.

Luxembourg ranks 23rd and Tonga ranks 26th of 144 countries.

Across the 6 decades both report, Luxembourg averaged higher in 4 and Tonga in 2.

Head to head by decade

Decade	Luxembourg	Tonga	Difference	Ahead
1960s	4.71	3.3	1.4	Luxembourg
1970s	2.75	4.55	1.8	Tonga
1980s	5.15	4.65	0.505	Luxembourg
1990s	5.26	5.46	0.2	Tonga
2000s	5.41	5.06	0.35	Luxembourg
2010s	5.54	5.34	0.2	Luxembourg

Averages of every year both report within each decade.

Frequently asked questions

Which has higher barro-lee: average years of primary schooling, age 75+, total, Luxembourg or Tonga?: Luxembourg, at 5.54 against 5.34 in Tonga as of 2010.
What is the difference in barro-lee: average years of primary schooling, age 75+, total between Luxembourg and Tonga?: 0.2, with Luxembourg ahead.
How many years of comparable data are there for Luxembourg and Tonga?: 11 years are reported by both, from 1960 to 2010.
How do Luxembourg and Tonga rank globally for barro-lee: average years of primary schooling, age 75+, total?: Luxembourg ranks 23rd and Tonga ranks 26th of 144 countries.
Where does this data come from?: Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/, published as Barro-Lee: Average years of primary schooling, age 75+, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Individual pages

About this data

Indicator: Barro-Lee: Average years of primary schooling, age 75+, total
Source: Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 144 places, 1,584 data points, 1960–2010
Last refreshed: 07 August 2026

Average years of primary schooling, 75+, total is the average years of primary education completed among people over age 75.