Daylight Saving Time (DST) is the practice of moving the clocks forward one hour from Standard Time for the summer months, and changing them back again in the fall. The general idea is that this allows us all to make better use of natural daylight.
By looking at the change in the Consumer Price Index we can see that an item that cost an average of 9.9 cents in 1913 would cost us about $1.82 in 2003, $2.02 in 2007, $2.33 in 2013 and $2.39 in 2016. To see an in depth view of the inflationary makeup of each decade:
Consumer Price Index, San Diego - First Half 2017 : Western ... Jul 14, 2017 ... Prices in the San Diego Area, as measured by the Consumer Price Index for All Urban Consumers (CPI-U), advanced 1.7 percent in the first ... www.bls.gov US Bureau of Labor Statistics Series Title: All items in San Diego, CA, all urban consumers, not seasonally adjusted.