Data begins on February 1, 2003 2003: July 15-19 Aug 5 Dec 6-9 2004: Jan 28 Jan 30 Mar 1-3 Apr 30 July 13-17 Oct 15-20 Dec 31 2005: Jan 27-31 Feb 1 Feb 14-28 All of March, April and May Jun 1-16 Sep 28-30 Oct 1-4 Oct 28-31 Nov 1-7 2006: Jan 22-24 Jan 28-31 Feb 1 Mar 6 May 4-6 Jul 29-31 Aug 1 Aug 10-17 Sep 2-5 Oct 8-11 2007: Apr 3-5 Jun 9-30 All of July Aug 1-6 Sep 19-22 Nov 18 Dec 21-25 2008: Mar 1-2 Mar 29-30 Apr 2-3 May 18 Jun 10-30 Jul 27 Nov 27 Dec 16 2009: Apr 29 May 31 Jun 12-13 Aug 21-23 Sep 2-3 2010: Jan 8-14 Mar 4 Jun 28 Jul 14 Sep 15 2011: not processed