The Department of Social Department carried out a tender to project the population in the Western Cape Province taking into account the HIV/AIDS epidemic. The provincial projections were achieved by adapting the ASSA2003 model developed by the Actuarial Society of South Africa to correspond to the situation in the Western Cape. Projections were carried out under the assumption that MTCTP (mother to child treatment programme) was introduced in 2001 and HAART was available since 2000 but significantly so since 2003 and that coverage reached 90% and nearly 60% respectively in 2005.