note: one million refugees fled into Zaire (now called the Democratic Republic of the Congo or DROC) in 1994 to escape the fighting between the Hutus and the Tutsis; fighting in the DROC between rebels and government forces in October 1996 caused 875,000 refugees to return to Rwanda in late 1996 and early 1997; an additional 173,000 Rwandan refugees disappeared in early 1997 and are assumed to have been killed by Zairian forces; fighting between the Congolese government and Uganda- and Rwanda-backed Congolese rebels spawned a regional war in DROC in August 1998, which left 1.8 million Congolese displaced in DROC and caused 300,000 Congolese refugees to flee to surrounding countries

Sex ratio: at birth: 1.03 male(s)/female

under 15 years: 1.01 male(s)/female

15-64 years: 0.96 male(s)/female

65 years and over: 0.73 male(s)/female

total population: 0.98 male(s)/female (2001 est.)

Infant mortality rate: 99.88 deaths/1,000 live births (2001 est.)

Life expectancy at birth: total population: 48.94 years

male: 46.96 years

female: 50.98 years (2001 est.)