Not only a rise in the prices of energy-related goods, including petroleum products, has contributed to raise the index, but also an improvement has been spreading in a wide range of items as the aggregate supply and demand balance of the economy has been improving.
That can be confirmed by the fact that the year-on-year rate of change in the CPI (all items excluding food and energy) turned positive at 0.3 percent in October, the highest rate of increase in 15 years since August 1998.