According to 2009 estimates, the HIV/AIDS prevalence rate is about 4.7% of the adult population (ages 15–49). This is in general agreement with the 2016 United Nations estimate of approximately 4%. Government expenditure on health was US$20 (PPP) per person in 2006 and 10.9% of total government expenditure in 2006. There was only around 1 physician for every 20,000 persons in 2009.