the united nations population fund has projected the average population growth rate between 1990 and 1995 as 3.1 per cent -lrb- which would double the population in about 30 years -rrb- with the birth rate at 45 per 1,000 persons and death rate at 14 per 1,000 -lrb- including an infant mortality rate of 96 -rrb- .