The Sample Survey on Population Changes provides estimates for birth rates, death rates, and growth rates in 2004. The survey targeted 0.97% of the population in China. Household questionnaires gathered information on employment, marital status, births, deaths, household size, and people who have left the household. Population data are broken down by gender and 5-year age groups for urban, rural, and town areas. Death data are broken down by gender and 5-year age groups.