MonthIndexExpenditure CategoryPeriods 
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Dec. Month's Change
All items
-0.18%
Food and beverages
0.15%
Housing
-0.13%
Apparel
-2.54%
Transportation
-0.14%
Medical care
-0.02%
Recreation
-0.53%
Education and communication
0.03%
Other goods and services
0.17%

Contributions are price changes weighted by an item's relative importance within the All-Items Index.   The contributions of sub-categories sum to the contribution of the overall category.