There were an estimated 140,000 cases of human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS) reported in 2003, and an estimated 1.9 percent of the adult population was afflicted with HIV/AIDS that year, among the lowest rates in Sub-Saharan Africa (see also HIV/AIDS in Africa). In the same year, there were 12,000 AIDS deaths. The infant mortality rate is 69.5 deaths/1,000 live births (75.3/1,000 among males and 63.5/1,000 among females) (2017 est.). Life expectancy at birth is 60.3 years (58.2 years among males and 62.5 years among females) (2017 est.).
Question: How many more years is the life expectancy at birth among females compared to males?
Answer: 4.3