Over-the-month percent change in price index for imports, September 2007-September 2008 (not seasonally adjusted) Percent change 2007 Sep 0.6 Oct 1.5 Nov 3.2 Dec -0.2 2008 Jan 1.5 Feb 0.2 Mar 3.1 Apr 2.8 May 2.8 Jun 3.0 Jul 1.4 Aug -2.6 Sep -3.0 Data may be revised in each of the three months after original publication.