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

28 years are reported by both, from 1996 to 2023.

Where does this data come from?

Statizoid (derived), published as Annual articles published in scientific and technical journals, per capita. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sierra Leone vs Yemen: Annual articles published in scientific and technical journals, per

Sierra Leone

0 units per person

in 2023

Yemen

0 units per person

in 2023

Sierra Leone rank

167th

Yemen rank

165th

Annual articles published in scientific and technical journals, per over time

Sierra Leone
Yemen

How they compare

Yemen currently reports 0 units per person against 0 units per person in Sierra Leone, a difference of 0 units per person.

The two have swapped places 3 times across 28 shared years of data; in 1996 it was Sierra Leone ahead.

Sierra Leone ranks 167th and Yemen ranks 165th of 196 countries.

Across the 4 decades both report, Sierra Leone averaged higher in 2 and Yemen in 2.

Head to head by decade

Decade	Sierra Leone	Yemen	Difference	Ahead
1990s	0 units per person	0 units per person	0 units per person	Sierra Leone
2000s	0 units per person	0 units per person	0 units per person	Yemen
2010s	0 units per person	0 units per person	0 units per person	Sierra Leone
2020s	0 units per person	0 units per person	0 units per person	Yemen

Averages of every year both report within each decade.

Frequently asked questions

Which has higher annual articles published in scientific and technical journals, per, Sierra Leone or Yemen?: Yemen, at 0 units per person against 0 units per person in Sierra Leone as of 2023.
What is the difference in annual articles published in scientific and technical journals, per between Sierra Leone and Yemen?: 0 units per person, with Yemen ahead.
How many years of comparable data are there for Sierra Leone and Yemen?: 28 years are reported by both, from 1996 to 2023.
How do Sierra Leone and Yemen rank globally for annual articles published in scientific and technical journals, per?: Sierra Leone ranks 167th and Yemen ranks 165th of 196 countries.
Where does this data come from?: Statizoid (derived), published as Annual articles published in scientific and technical journals, per capita. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Sierra Leone vs Yemen: Annual articles published in scientific and technical journals, per. Statizoid, drawing on Statizoid (derived). Retrieved 22 September 2026, from https://reference.statizoid.com/compare/annual-articles-published-in-scientific-and-technical-journals-per-capita/sierra-leone/yemen-rep/

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<a href="https://reference.statizoid.com/compare/annual-articles-published-in-scientific-and-technical-journals-per-capita/sierra-leone/yemen-rep/">Sierra Leone vs Yemen: Annual articles published in scientific and technical journals, per</a> — Statizoid

About this data

Indicator: Annual articles published in scientific and technical journals, per capita
Unit: units per person
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 196 places, 5,488 data points, 1996–2023
Last refreshed: 22 September 2026

Annual articles published in scientific and technical journals divided by Population, total, matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.