How do you spend your money? The U.S. Census Bureau wants to know.

William F. Adams, director of the bureau's Denver regional office, said Census employees are interviewing area residents to find out more about personal spending habits in a Consumer Expenditure Survey. The information will be used to update the Consumer Price Index, which is a national measurement of changes in the retail prices of a market basket of goods and services. For example, Census statistics show that American consumers spent 5 percent less of their dollar to buy food in 1986 than they did in 1980, while vehicle and housing expenses rose slightly during the same time period.Information collected in the survey is confidential by law, and interviewers will present Census Bureau identification, Adams said.