Over-the-month percent change in price index for imports, May 2008-May 2009 (not seasonally adjusted) Percent change 2008 May 2.8 Jun 3.0 Jul 1.4 Aug -3.1 Sep -3.6 Oct -6.0 Nov -7.4 Dec -4.6 2009 Jan -1.3 Feb 0.0 Mar 0.5 Apr 1.1 May 1.3 Data may be revised in each of the three months after original publication.