World's longest-serving leaders

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World's longest-serving leaders - Top 20

With the passing of President Lansana Conte of Guinea this week (who was #12 of the top 20 longest-serving leaders), we have revised the list to reflect this reality. Also revised is the socio-economic data for each country based on the latest data available from World Economic Forum and CIA World Facts.

Rank	Leader¹	In power since	Country	Country Data²
1	Prime Minister Hassanal Bolkiah	October 5, 1967	Brunei	Population: 0.4 Million GDP Per Capita: US$49,898 Life Expectancy: 76.9 Literacy: 94.6% HDI³: 0.92 (27/179)
2	President El Hadj Omar Bongo Ondimba	December 2, 1967	Gabon	Population: 1.5 Million GDP Per Capita: US$14,208 Life Expectancy: 56.3 years Literacy: 85.4% HDI: 0.73 (107/179)
3	Colonel Muammar Gaddafi	September 1, 1969	Libya	Population: 6.2 Million GDP Per Capita: US$13,362 Life Expectancy: 73.6 years Literacy: 86.2% HDI: 0.84 (52/179)
4	Prime Minister Qaboos bin Said al-Said	July 23, 1970	Oman	Population: 3.3 Million GDP Per Capita: US$20,999 Life Expectancy: 75.3 years Literacy: 83.7% HDI: 0.84 (53/179)
5	Prime Minister Khalifa bin Salman al-Khalifa	August 15, 1971	Bahrain	Population: 0.7 Million GDP Per Capita: US$34,516 Life Expectancy: 75.4 years Literacy: 88.3% HDI: 0.902 (32/179)
6	President Ali Abdallah Saleh	July 17, 1978	Yemen	Population: 23 Million GDP Per Capita: US$2,262 Life Expectancy: 62.0 years Literacy: 57.3% HDI: 0.567 (138/179)
7	President Teodoro Obiang Nguema Mbasogo	August 3, 1979	Equatorial Guinea	Population: 0.6 Million GDP Per Capita: US$27,161 Life Expectancy: 50.8 years Literacy: 87% HDI: 0.642 (115/179)
8	President Jose Eduardo dos Santos	September 21, 1979	Angola	Population: 12.5 Million GDP Per Capita: US$4,434 Life Expectancy: 42.1 years Literacy: 67.4% HDI: 0.484 (157/179)
9	President Robert Gabriel Mugabe	March 4, 1980	Zimbabwe	Population: 11.4 Million GDP Per Capita: US$200 Life Expectancy: 44.3 years Literacy: 90.7% HDI: 0.513 (151/177)⁴
10	President Hosni Mubarak	October 14, 1981	Egypt	Population: 81.7 Million GDP Per Capita: US$4,953 Life Expectancy: 71.0 years Literacy: 71.4% HDI: 0.716 (116/179)
11	President Paul Biya	November 6, 1982	Cameroon	Population: 18.5 Million GDP Per Capita: US$2,043 Life Expectancy: 50.0 years Literacy: 67.9% HDI: 0.514 (150/179)
12	Prime Minister Samdech Hun Sen	January 14, 1985	Cambodia	Population: 14.2 Million GDP Per Capita: US$1,619 Life Expectancy: 58.6 years Literacy: 75.6% HDI: 0.575 (136/179)
13	President Yoweri Museveni	January 26, 1986	Uganda	Population: 31.4 Million GDP Per Capita: US$888 Life Expectancy: 50.5 years Literacy: 72.6% HDI: 0.493 (156/179)
14	King Mswati III	April 25, 1986	Swaziland	Population: 1.1 Million GDP Per Capita: US$4,705 Life Expectancy: 40.2 years Literacy: 79.6% HDI: 0.542 (141/179)
15	President Blaise Compaore	October 15, 1987	Burkina Faso	Population: 15.3 Million GDP Per Capita: US$1,084 Life Expectancy: 51.7 years Literacy: 26.0% HDI: 0.372 (173/179)
16	President Zine el Abidine Ben Ali	November 7, 1987	Tunisia	Population: 10.4 Million GDP Per Capita: US$6,958 Life Expectancy: 73.7 years Literacy: 76.9% HDI: 0.762 (95/179)
17	Supreme Leader Ayatollah Ali Hoseini-Khamenei	June 4, 1989	Iran	Population: 65.9 Million GDP Per Capita: US$10,031 Life Expectancy: 70.5 years Literacy: 84% HDI: 0.777 (84/179)
18	President Islom Karimov	June 23, 1989	Uzbekistan	Population: 27.3 Million GDP Per Capita: US$2,189 Life Expectancy: 66.9 years Literacy: 96.9% HDI: 0.701 (119/179)
19	President Omar Hassan Ahmad al-Bashir	June 30, 1989	Sudan	Population: 40.2 Million GDP Per Capita: US$1,887 Life Expectancy: 57.8 years Literacy: 60.9% HDI: 0.526 (146/179)
20	President Nursultan Nazarbayev	February 22, 1990	Kazakhstan	Population: 15.3 Million GDP Per Capita: US$9,832 Life Expectancy: 66.4 years Literacy: 99.6% HDI: 0.807 (71/179)

1 The list excludes ceremonial leaders and monarchies with no real power

2 Country data source: CIA World Facts and Human Development Report, UNDP

2 GDP Per Capita based on data for 2006

2 Current World Average GDP Per Capita = US$10,000

2 Current World Average Life Expectancy = 66.3 years

2 Current Average Population / Nation = 34.6 Million

2 Current World Literacy Rate = 82%

3 HDI is Human Development Index compiled by UNDP for 2007. Using broad socio-economic factors, this index ranks nations according to their ability to develop their nation/population successfully. For 2007, Iceland was ranked first at 0.968 (1/179), and Sierra Leone last at 0.336 (179/179).

4 Based on 2005 data.