The Consumer Price Index, as calculated by the U S Bureau of Labor Statistics over the years 2014 - 2018:
2014 0.8%
2015 0.7%
2016 2.1%
2017 2.1%
2018 1.9%

The prices of individual items in the "basket" are regularly adjusted for quality. Theoretically, if the rent on a 2 bedroom apartment is increased by 5% per year, and the quality of apartment living also improved by 5%, then the increase is zero, for purposes of calculating the CPI.

The Chapwood Index is based on the UNADJUSTED actual cost of the top 500 items on which Americans spend their money (or charge their credit cards for), in the 50 largest cities. Over the same 2014-2018 time period, prices increased quite a bit more than the CPI rates. Of the 50 largest American cities, Mesa AZ had an average annual increase of 6.6%
The city with the most rapid rate of increase was San Jose CA with a 13% average annual increase.

All 50 of the largest cities were in the 6.6% to 13% range.

http://chapwoodindex.com