The total fertility rate has decreased from 5.8 in 1960 to 4.2 children per mother during childbearing years in 2000. Ten percent of all births were low birth weight. The maternal mortality rate was 520 per 100,000 live births as of 1998. In 2005, the infant mortality rate was 55.35 per 1,000 live births and life expectancy was 55.02 years. As of 2002, the overall mortality rate was estimated at 17.6 per 1,000 inhabitants.