That's the annualized month-over-month change in the CPI-U ex food and energy (for the just released September number over August). The above graph is the month-over-month changes (annualized) since the beginning of 2008.
I'm a scientist and innovator in the technology industry, with a broad range of interests and experiences. I have a Physics PhD, MS in CS, and have done research, lived in cohousing communities, run a business, and designed technology products. Professionally, I have mainly worked on computer security problems. Currently I'm Adjunct Professor of Computer Science at Cornell, but this blog represents my views only.
Email me at stuart -- at -- earlywarn -- dot -- org. I do read all email, but because the blog is a part-time unfunded enterprise, I often fail to reply due to lack of time - apologies.