Beginning with the March 2003 survey, the weights were recalculated to mirror the demographic distribution of the 2001 census, and then adjusted for estimated demographic changes between 2001 and 2003, including internal migration (Statistics South Africa 2003). The erroneous population growth rate assumptions, and the problems with the census proportions, were not corrected until the September 2004 survey (Wave 10), when improved mortality data became available (Statistics South Africa 2004, 2005). This resulted in a significant downward revision of the estimated size of the population, and hence of the level of employment. Statistics South Africa (known as StatsSA) has also published revised estimates of key labor market statistics for March 2004, and is working on a full set of revised weights for the earlier waves that will reflect the new mortality information. For the time being, however, no consistent official series of sampling weights is available. This poses a serious problem, as both the changes in scale and the changes in the age, gender, province, and race-group distributions result in artifactual changes in the measured employment of domestic workers that are too large to be ignored.