The size of Zimbabwe's population may decrease by as much as 23% between 1992 and 2010 due to the country's HIV/AIDS epidemic, according to a report published last Thursday by the country's Institute of Development Poverty Reduction Forum, Xinhua News Agency reports. According to the report, which was funded by the United Nations Development Programme, the country's population could have grown from 11.8 million in 1992 to 16.6 million in 2010 without HIV/AIDS. However, because of the disease, the country's annual population growth rate is expected to become negative by 2010.