In Tanzania, the National Consumer Price Index (NCPI) measures the change over time in the cost of a fixed basket of goods and services that are purchased by a representative sample of households. The index weights are based on expenditures of both urban and rural households in the 25 geographic regions. The most important categories in the NCPI are: Food & Non-alcoholic Beverages (28% total weight); Housing, Water, Electricity, Gas and Other Fuel (15%); Transport (14%); Clothing & Footwear (11%); and Furnishing, Housing Equipment and Routine Maintenance of the House (8%). The index also includes: Restaurants & Hotels (7%), Communications (5%), Health (3%), Miscellaneous Goods & Services (2%), Education (2%), Alcoholic Beverages and Tobacco (2%) and Recreation & Culture (2%).