How many years of comparable data are there for New Zealand and Sierra Leone?

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: Population in thousands, age 15+, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

New Zealand vs Sierra Leone: Barro-Lee: Population in thousands, age 15+, total

New Zealand

3,337

in 2010

Sierra Leone

3,493

in 2010

New Zealand rank

106th

Sierra Leone rank

104th

Barro-Lee: Population in thousands, age 15+, total over time

New Zealand
Sierra Leone

How they compare

Sierra Leone currently reports 3,493 against 3,337 in New Zealand, a difference of 156.

The two have swapped places 1 time across 11 shared years of data; in 1960 it was New Zealand ahead.

New Zealand ranks 106th and Sierra Leone ranks 104th of 144 countries.

Across the 6 decades both report, New Zealand averaged higher in 5 and Sierra Leone in 1.

Head to head by decade

Decade	New Zealand	Sierra Leone	Difference	Ahead
1960s	1,682	1,424	257.5	New Zealand
1970s	2,041	1,678	363	New Zealand
1980s	2,368	2,028	341	New Zealand
1990s	2,715	2,390	325	New Zealand
2000s	3,056	2,872	185	New Zealand
2010s	3,337	3,493	156	Sierra Leone

Averages of every year both report within each decade.

Frequently asked questions

Which has higher barro-lee: population in thousands, age 15+, total, New Zealand or Sierra Leone?: Sierra Leone, at 3,493 against 3,337 in New Zealand as of 2010.
What is the difference in barro-lee: population in thousands, age 15+, total between New Zealand and Sierra Leone?: 156, with Sierra Leone ahead.
How many years of comparable data are there for New Zealand and Sierra Leone?: 11 years are reported by both, from 1960 to 2010.
How do New Zealand and Sierra Leone rank globally for barro-lee: population in thousands, age 15+, total?: New Zealand ranks 106th and Sierra Leone ranks 104th of 144 countries.
Where does this data come from?: Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/, published as Barro-Lee: Population in thousands, age 15+, total. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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New Zealand vs Sierra Leone: Barro-Lee: Population in thousands, age 15+, total. Statizoid, drawing on Robert J. Barro and Jong-Wha Lee: http://www.barrolee.com/. Retrieved 04 September 2026, from https://education.statizoid.com/compare/barro-lee-population-in-thousands-age-15-total/new-zealand/sierra-leone/

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<a href="https://education.statizoid.com/compare/barro-lee-population-in-thousands-age-15-total/new-zealand/sierra-leone/">New Zealand vs Sierra Leone: Barro-Lee: Population in thousands, age 15+, total</a> — Statizoid

About this data

Indicator: Barro-Lee: Population in thousands, age 15+, 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: 04 September 2026

Population in thousands, age 15+, total is the total population over age 15 in thousands estimated by Barro-Lee.