United Nations (UN) Classification of individual consumption by purpose (COICOP)
“The people who have thought about this more than I ever will”
As linked on http://quantifiedself.com/2012/03/numbers-from-around-the-web-round-4/.
COICOP 01-12 - Individual consumption expenditure of households
    01 - FOOD AND NON-ALCOHOLIC BEVERAGES
        01.1 - Food 
        01.2 - Non-alcoholic beverages 
    02 - ALCOHOLIC BEVERAGES AND TOBACCO
        02.1 - Alcoholic beverages 
        02.2 - Tobacco 
    03 - CLOTHING AND FOOTWEAR
        03.1 - Clothing 
        03.2 - Footwear 
    04 - HOUSING, WATER, GAS, ELECTRICITY AND OTHER FUELS
        04.1 - Actual rentals for housing 
        04.3 - Regular maintenance and repair of the dwelling 
        04.4 - Other services relating to the dwelling 
        04.5 - Electricity, gas and other fuels 
    05 - FURNISHINGS, HOUSEHOLD EQUIPMENT AND ROUTINE MAINTENANCE OF THE HOUSE
        05.1 - Furniture, furnishings and decorations, carpets and other floor coverings and repairs 
        05.2 - Household textiles 
        05.3 - Household appliances 
        05.4 - Glassware, tableware and household utensils 
        05.5 - Tools and equipment for house and garden 
        05.6 - Goods and services for routine household maintenance 
    06 - HEALTH
        06.1 - Medical products, appliances and equipment 
        06.2 - Outpatient services 
        06.3 - Hospital services 
    07 - TRANSPORT
        07.1 - Purchase of vehicles 
        07.2 - Operation of personal transport equipment 
        07.3 - Transport services 
    08 - COMMUNICATIONS
        08.1 - Postal services 
        08.2/3 - Telephone and telefax equipment and services 
    09 - RECREATION AND CULTURE
        09.1 - Audio-visual, photographic and information processing equipment 
        09.2 - Other major durables for recreation and culture 
        09.3 - Other recreational items and equipment, gardens and pets 
        09.4 - Recreational and cultural services 
        09.5 - Newspapers, books and stationery 
        09.6 - Package holidays 
    10 - EDUCATION 
    11 - Restaurants and hotels
        11.1 - Catering services 
        11.2 - Accommodation services 
    12 - MISCELLANEOUS GOODS AND SERVICES
        12.1 - Personal care 
        12.3 - Personal effects n.e.c. 
        12.4 - Social protection 
        12.5 - Insurance 
        12.6 - Financial services n.e.c. 
        12.7 - Other services n.e.c.