It is likely that sticky consumer prices elevated the CPI considerably from the mid-1980s through the first half of the 1990s, before Japan fell into deflation.
In the current situation, however, sticky consumer prices, which are mainly composed of services prices, have not yet made a significant contribution to a rise in the CPI, though they could potentially make a greater contribution in response to the results of this year's annual spring labor-management wage negotiations. The key here, as previously mentioned, will be a sustained increase in wages.