ftp://ftp.bls.gov/pub/special.requests/cpi/cpiai.txt
http://en.wikipedia.org/wiki/Consumer_price_index
http://en.wikipedia.org/wiki/Image:Consumer_Price_Index_US_1913-2004.png
http://en.wikipedia.org/wiki/Image:US-Inflation-by-year.png
http://inflationdata.com/inflation/Consumer_Price_Index/HistoricalCPI.aspx
http://inflationdata.com/inflation/Inflation_Rate/HistoricalInflation.aspx