In May, headline inflation, as measured by the Consumer Price Index (CPI) rose marginally to 8.3 percent from 8.2 percent April. Inflation increased for most commodity groups, including: clothing and footwear (from 9.2 percent to 9.6 percent); furnishing, household equipment and routine maintenance (from 8.2 percent to 8.3 percent); transport (from 12.6 percent to 15.6 percent, due to further increases in the prices of petroleum products); recreation and culture (from 11.1 percent to 11.4 percent); restaurants and hotels (from 7.9 percent to 9.0 percent) and miscellaneous goods and services (from 5.2 percent to 5.4 percent). However, these increases were largely offset by declines in inflation for food and non-alcoholic beverages (from 6.5 percent to 6.2 percent), housing, water, electricity, gas and other fuels (from 7.6 percent to 4.3 percent due to the electricity tariff increase in May 2010 falling out of the inflation calculation); health (from 4.5 percent to 4.4 percent) and communication (from 1.1 percent to -4.5 percent, due to the recent downward revision to mobile phone tariffs). Inflation remained unchanged for alcohol and tobacco and education at 8.3 percent and 10.6 percent, respectively.

The trimmed mean measure of core inflation increased from 8.0 percent in April to 8.2 percent, while inflation excluding administered prices declined from 7.4 percent in April to 7.3 percent.