The Wall Street Journal has a very interesting piece on the economic crash. The article is primarily a postmortem of the recent economic collapse, but here are a few highlights regarding inflation:
"In 1983, the Bureau of Labor Statistics began to use rental equivalence for homeowner-occupied units instead of direct home-ownership costs... Between 1999 and 2006, the price-to-rent ratio shot up from 20.8 to 32.3.
With home price increases out of the CPI and the price-to-rent ratio rapidly increasing, an important component of inflation remained outside the index. In 2004 alone, the price-rent ratio increased 12.3%. Inflation for that year was underestimated by 2.9 percentage points (since "owners' equivalent rent" is about 23% of the CPI). If home-ownership costs were included in the CPI, inflation would have been 6.2% instead of 3.3%.
...As measured by the Case-Shiller 10 city index, the accumulated inflation in home-ownership costs between January 1999 and June 2006 was 151%, but the CPI measured a mere 23% increase. As the Federal Reserve monitored inflation in the early part of this decade, home-price increases were no longer visible in the CPI, so the lax monetary policy continued. Even after the Fed began to slowly raise the fed-funds rate in May 2004, the average rate remained low and the bubble continued to inflate for two more years."
This is an example of what many economists have been saying for years: the government measure of inflation is deceptive. Inflation can be considerably higher than most, especially the government, will tell us.