In the first graph, we see that the year-over-year change in January for the Mountain-Plains CPI was down from January 2012's change of 2.6 percent, and was well down from 2008's pre-recession annual change of 3.8 percent.
The second graph shows year-over-year changes in Mountain-Plains CPI for all months since 2002:
The CPI change from December 2012 to January 2012 was up 0.3 percent.
Over the past ten years (comparing June 2003 to June 2012), the CPI has risen 23.7 percent. In other words, a dollar today buys about 75 percent of what it did in 2003.