Which country has the highest Year Added?

South Sudan has the highest Year Added, at 2,012, followed by Timor-Leste (2,003) and Senegal (2,000).

Which country has the lowest Year Added?

Samoa has the lowest Year Added, at 1,971.

What is the median Year Added across countries?

The median is 1,975 across the 51 countries with data.

Where does this underdeveloped countries data come from?

Rankodex compiles it from World Population Review and the primary sources it cites: Human Development Insights - UNDP; Least Developed Countries Report - United Nations Conference for Trade and Development; LDCs at a Glance - United Nations; List of Least Developed Countries - United Nations Committee for Development Policy.

Country rankings

Underdeveloped Countries

Name: Underdeveloped Countries
Creator: Rankodex

South Sudan has the highest Year Added (2,012), followed by Timor-Leste (2,003) and Senegal (2,000). Samoa has the lowest (1,971).

Economics216 countries · 6 metricsUpdated May 14, 2025Original page

7 sources

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51 of 235 countries

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Year Added

Darker means higher. Click a place to highlight it.

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All 51 ranked

Highest first.

Distribution Median and middle halfThe median is the middle value: half of places are above it, half below. The middle half is the range holding the central 50% of places.More in the glossary →

Each dot is one country; the lines mark the median and the middle half.

Median

1,975

Middle half 1,971 – 1,987

Average

1,980

51 countries

Highest

2,012

South Sudan

Lowest

1,971

Samoa

Data

Click a column to sort, a row to highlight that place on the charts.

216 countries · # = rank by Year Added

#
1	South Sudan	2,012	—	Applied	Lower
2	Timor-Leste	2,003	—	Applied	Lower Middle
3	Senegal	2,000	2029*	Yes	Lower Middle
4	Angola	1,994	—	Yes	Lower Middle
4	Eritrea	1,994	—	No	Lower
6	DR Congo	1,991	—	Yes	Lower
6	Madagascar	1,991	—	Yes	Lower
6	Zambia	1,991	—	Yes	Lower Middle
6	Cambodia	1,991	2029*	Yes	Lower Middle
6	Solomon Islands	1,991	2027*	Yes	Lower Middle
11	Liberia	1,990	—	Yes	Lower
12	Mozambique	1,988	—	Yes	Lower
13	Myanmar	1,987	—	Yes	Lower Middle
14	Mauritania	1,986	—	Yes	Lower Middle
14	Kiribati	1,986	—	No	Lower Middle
14	Tuvalu	1,986	—	No	Upper Middle
17	Vanuatu	1,985	2,020	—	Lower Middle
18	Togo	1,982	—	Yes	Lower
18	Sierra Leone	1,982	—	Yes	Lower
18	Equatorial Guinea	1,982	2,017	—	Upper Middle
18	Djibouti	1,982	—	Yes	Lower Middle
22	Guinea-Bissau	1,981	—	Yes	Lower
23	Comoros	1,977	—	Applied	Lower Middle
23	Cape Verde	1,977	2,007	No	Upper Middle
25	Bangladesh	1,975	2026*	Yes	Lower Middle
25	Central African Republic	1,975	—	Yes	Lower
25	Gambia	1,975	—	Yes	Lower
28	Ethiopia	1,971	—	Applied	Lower
28	Tanzania	1,971	—	Yes	Lower Middle
28	Sudan	1,971	—	Applied	Lower
28	Uganda	1,971	—	Yes	Lower
28	Afghanistan	1,971	—	Yes	Lower
28	Yemen	1,971	—	Yes	Lower
28	Nepal	1,971	2026*	Yes	Lower Middle
28	Niger	1,971	—	Yes	Lower
28	Mali	1,971	—	Yes	Lower
28	Burkina Faso	1,971	—	Yes	Lower
28	Malawi	1,971	—	Yes	Lower
28	Chad	1,971	—	Yes	Lower
28	Somalia	1,971	—	Applied	Lower
28	Guinea	1,971	—	Yes	Lower Middle
28	Benin	1,971	—	Yes	Lower Middle
28	Rwanda	1,971	—	Yes	Lower
28	Burundi	1,971	—	Yes	Lower
28	Haiti	1,971	—	Yes	Lower Middle
28	Laos	1,971	2026*	Yes	Lower Middle
28	Botswana	1,971	1,994	—	Upper Middle
28	Lesotho	1,971	—	Yes	Lower Middle
28	Bhutan	1,971	2,023	Applied	Lower Middle
28	Maldives	1,971	2,011	—	Upper Middle
28	Samoa	1,971	2,014	No	Upper Middle
—	India	—	—	No	Lower Middle
—	China	—	—	—	Upper Middle
—	United States	—	—	—	High
—	Indonesia	—	—	No	Upper Middle
—	Pakistan	—	—	No	Lower Middle
—	Nigeria	—	—	No	Lower Middle
—	Brazil	—	—	—	Upper Middle
—	Russia	—	—	—	High
—	Mexico	—	—	—	Upper Middle
—	Japan	—	—	—	High
—	Egypt	—	—	No	Lower Middle
—	Philippines	—	—	No	Lower Middle
—	Vietnam	—	—	No	Lower Middle
—	Iran	—	—	No	Upper Middle
—	Turkey	—	—	—	Upper Middle
—	Germany	—	—	—	High
—	Thailand	—	—	—	Upper Middle
—	United Kingdom	—	—	—	High
—	France	—	—	—	High
—	South Africa	—	—	—	Upper Middle
—	Italy	—	—	—	High
—	Kenya	—	—	No	Lower Middle
—	Colombia	—	—	—	Upper Middle
—	South Korea	—	—	—	High
—	Algeria	—	—	No	Upper Middle
—	Iraq	—	—	—	Upper Middle
—	Spain	—	—	—	High
—	Argentina	—	—	—	Upper Middle
—	Canada	—	—	—	High
—	Ukraine	—	—	No	Upper Middle
—	Morocco	—	—	No	Lower Middle
—	Poland	—	—	—	High
—	Uzbekistan	—	—	No	Lower Middle
—	Malaysia	—	—	—	Upper Middle
—	Ghana	—	—	No	Lower Middle
—	Saudi Arabia	—	—	—	High
—	Peru	—	—	—	Upper Middle
—	Ivory Coast	—	—	No	Lower Middle
—	Cameroon	—	—	No	Lower Middle
—	Venezuela	—	—	—	Unclassified (lack of data)
—	Australia	—	—	—	High
—	North Korea	—	—	No	Lower
—	Syria	—	—	No	Lower
—	Sri Lanka	—	—	No	Lower Middle
—	Taiwan	—	—	—	High
—	Kazakhstan	—	—	—	Upper Middle
—	Chile	—	—	—	High
—	Guatemala	—	—	—	Upper Middle
—	Romania	—	—	—	High
—	Netherlands	—	—	—	High
—	Ecuador	—	—	—	Upper Middle
—	Zimbabwe	—	—	No	Lower Middle
—	Bolivia	—	—	No	Lower Middle
—	Tunisia	—	—	No	Lower Middle
—	Belgium	—	—	—	High
—	Dominican Republic	—	—	—	Upper Middle
—	Jordan	—	—	—	Lower Middle
—	United Arab Emirates	—	—	—	High
—	Honduras	—	—	No	Lower Middle
—	Tajikistan	—	—	—	Lower Middle
—	Papua New Guinea	—	—	No	Lower Middle
—	Cuba	—	—	—	Upper Middle
—	Sweden	—	—	—	High
—	Czechia	—	—	—	High
—	Azerbaijan	—	—	—	Upper Middle
—	Portugal	—	—	—	High
—	Greece	—	—	—	High
—	Israel	—	—	—	High
—	Hungary	—	—	—	High
—	Austria	—	—	—	High
—	Switzerland	—	—	—	High
—	Belarus	—	—	—	Upper Middle
—	Turkmenistan	—	—	—	Upper Middle
—	Libya	—	—	—	Upper Middle
—	Kyrgyzstan	—	—	No	Lower Middle
—	Hong Kong	—	—	—	High
—	Nicaragua	—	—	No	Lower Middle
—	Paraguay	—	—	—	Upper Middle
—	Bulgaria	—	—	—	High
—	Serbia	—	—	—	Upper Middle
—	Republic of the Congo	—	—	—	Lower Middle
—	El Salvador	—	—	No	Upper Middle
—	Denmark	—	—	—	High
—	Singapore	—	—	—	High
—	Lebanon	—	—	—	Lower Middle
—	Palestine	—	—	No	Lower Middle
—	Oman	—	—	—	High
—	Norway	—	—	—	High
—	Finland	—	—	—	High
—	Slovakia	—	—	—	High
—	Ireland	—	—	—	High
—	New Zealand	—	—	—	High
—	Costa Rica	—	—	—	High
—	Kuwait	—	—	—	High
—	Panama	—	—	—	High
—	Croatia	—	—	—	High
—	Georgia	—	—	—	Upper Middle
—	Mongolia	—	—	No	Upper Middle
—	Uruguay	—	—	—	High
—	Puerto Rico	—	—	—	High
—	Qatar	—	—	—	High
—	Namibia	—	—	—	Lower Middle
—	Bosnia and Herzegovina	—	—	—	Upper Middle
—	Moldova	—	—	—	Upper Middle
—	Armenia	—	—	—	Upper Middle
—	Jamaica	—	—	—	Upper Middle
—	Lithuania	—	—	—	High
—	Albania	—	—	—	Upper Middle
—	Gabon	—	—	—	Upper Middle
—	Slovenia	—	—	—	High
—	Latvia	—	—	—	High
—	North Macedonia	—	—	—	Upper Middle
—	Bahrain	—	—	—	High
—	Trinidad and Tobago	—	—	—	High
—	Cyprus	—	—	—	High
—	Estonia	—	—	—	High
—	Eswatini	—	—	No	Lower Middle
—	Mauritius	—	—	—	Upper Middle
—	Fiji	—	—	—	Upper Middle
—	Guyana	—	—	—	High
—	Macau	—	—	—	High
—	Luxembourg	—	—	—	High
—	Suriname	—	—	—	Upper Middle
—	Montenegro	—	—	—	Upper Middle
—	Malta	—	—	—	High
—	Brunei	—	—	—	High
—	Belize	—	—	No	Upper Middle
—	Bahamas	—	—	—	High
—	Iceland	—	—	—	High
—	New Caledonia	—	—	—	High
—	French Polynesia	—	—	—	High
—	Barbados	—	—	—	High
—	Sao Tome and Principe	—	—	Applied	—
—	Curacao	—	—	—	High
—	Saint Lucia	—	—	—	Upper Middle
—	Guam	—	—	—	High
—	Seychelles	—	—	—	High
—	Grenada	—	—	—	Upper Middle
—	Micronesia	—	—	—	Lower Middle
—	Aruba	—	—	—	High
—	Tonga	—	—	—	Upper Middle
—	Saint Vincent and the Grenadines	—	—	—	Upper Middle
—	Antigua and Barbuda	—	—	—	High
—	Isle of Man	—	—	—	High
—	Andorra	—	—	—	High
—	United States Virgin Islands	—	—	—	High
—	Cayman Islands	—	—	—	High
—	Dominica	—	—	—	Upper Middle
—	Bermuda	—	—	—	High
—	Faroe Islands	—	—	—	High
—	Greenland	—	—	—	High
—	Turks and Caicos Islands	—	—	—	High
—	Saint Kitts and Nevis	—	—	—	High
—	American Samoa	—	—	—	High
—	Sint Maarten	—	—	—	High
—	Northern Mariana Islands	—	—	—	High
—	Gibraltar	—	—	—	High
—	Liechtenstein	—	—	—	High
—	British Virgin Islands	—	—	—	High
—	Monaco	—	—	—	High
—	Marshall Islands	—	—	—	Upper Middle
—	San Marino	—	—	—	High
—	Saint Martin	—	—	—	High
—	Palau	—	—	—	High
—	Nauru	—	—	—	High

What correlates with Year Added?

Pearson r against 1,273 other country metrics sharing at least 31 countries. Correlation is not causation.

Higher together

Places that have a higher Year Added tend to score higher on these

Ecological Reserve or DeficitEcological Footprint by Country
r = +0.46 · moderate · n = 37
Plot
Climate ChangeGreenest (Most Eco-Friendly) Countries
r = +0.45 · moderate · n = 47
Plot
% of Population at Risk and Poor ($1.9/Day)Flooding by Country
r = +0.44 · moderate · n = 42
Plot
Total Cigarette SmokersSmoking Rates by Country
r = +0.42 · moderate · n = 40
Plot
Male Cigarette SmokersSmoking Rates by Country
r = +0.41 · moderate · n = 40
Plot
Male Tobacco SmokersSmoking Rates by Country
r = +0.40 · moderate · n = 41
Plot

Opposite directions

Places that have a higher Year Added tend to score lower on these

Alcohol ConsumptionAlcohol Consumption by Country
r = −0.39 · moderate · n = 45
Plot
Mean ElevationFlattest Countries
r = −0.36 · moderate · n = 40
Plot
Drought Risk Score (Aqueduct)Droughts by Country
r = −0.36 · moderate · n = 36
Plot
Consumer Spending (% of GDP)Consumer Spending by Country
r = −0.35 · moderate · n = 38
Plot
Fruit Consumption per CapitaFruit Consumption by Country
r = −0.34 · moderate · n = 49
Plot
Elevation (m)Elevation by Country
r = −0.33 · moderate · n = 45
Plot

Quick answers

Which country has the highest Year Added?: South Sudan has the highest Year Added, at 2,012, followed by Timor-Leste (2,003) and Senegal (2,000).
Which country has the lowest Year Added?: Samoa has the lowest Year Added, at 1,971.
What is the median Year Added across countries?: The median is 1,975 across the 51 countries with data.
Where does this underdeveloped countries data come from?: Rankodex compiles it from World Population Review and the primary sources it cites: Human Development Insights - UNDP; Least Developed Countries Report - United Nations Conference for Trade and Development; LDCs at a Glance - United Nations; List of Least Developed Countries - United Nations Committee for Development Policy.

Higher together

Opposite directions

Quick answers

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