|This chart shows the cumulative effect of cpi inflation over the past 5, 10, 15, and 20 years|
The shortest red line shows 11.0 % total inflation over the past 5 years;
the green line shows a total of 27.5% total cpi inflation over the past 10 years;
the brownish line shows 43.9% increase in total inflation over the past 15 years; and
the longest blue lines shows a total increase of inflation of 65.6% over the past 20 years.
If you want to play further with variations to this chart over at FRED or if you want to download the data that was used to create this chart you can use the following link: FRED 20 year cumulative view of cpi
Key take away - except for a little hiccup in 2001 and for a dramatic drop in 2009, headline cpi inflation has increased at a rather steady and substantial rate as can be seen by the readily visible even slope of these trend lines. It also looks like the latest rise over the past year has been bring the cumulative number back previous trend line..