The CPS provides data by race, with the race given by the household respondent. Since 2003, respondents are allowed to choose more than one race; previously, multiracial persons were required to select a single primary race. Persons who select more than one race are classified separately in the category “two or more races. ” Persons who select one race only are classified in one of the following five categories: 1) white, 2) black or African American, 3) Asian, 4) Native Hawaiian and other Pacific Islander, and 5) American Indian or Alaska Native. Only data for whites, blacks, and Asians are currently published because the number of survey respondents for the other racial categories is not large enough to produce statistically reliable estimates.