Year | Avg. cost/title | % annual increase | CPIa |
---|
2004 | 2,582 | | 2.7 |
2005 | 2,748 | 6 | 3.4 |
2006 | 2,965 | 8 | 3.2 |
2007 | 3,187 | 7 | 2.8 |
2008 | 3,490 | 9 | |
- aConsumer price index, a measure of inflation in the United States, see United States Department of Labor, Bureau of Labor Statistics, http://www.bls.gov/cpi/.