2008-07-01 to 2008-10-01 (302 threads) 2008-04-01 to 2008-07-01 (303 threads) 2008-01-01 to 2008-04-01 (317 threads) 2007-10-01 to 2008-01-01 (169 threads) 2007-07-01 to 2007-10-01 (194 threads) 2007-04-01 to 2007-07-01 (209 threads) 2007-01-01 to 2007-04-01 (242 threads) 2006-10-01 to 2007-01-01 (232 threads) 2006-07-01 to 2006-10-01 (227 threads) 2006-04-01 to 2006-07-01 (223 threads) 2006-01-01 to 2006-04-01 (264 threads) 2005-10-01 to 2006-01-01 (205 threads) 2005-07-01 to 2005-10-01 (189 threads) 2005-04-01 to 2005-07-01 (190 threads) 2005-01-01 to 2005-04-01 (240 threads) 2004-10-01 to 2005-01-01 (221 threads) 2004-07-01 to 2004-10-01 (244 threads) 2004-04-01 to 2004-07-01 (220 threads) 2004-01-01 to 2004-04-01 (215 threads) 2003-10-01 to 2004-01-01 (238 threads) 2003-07-01 to 2003-10-01 (268 threads) 2003-04-01 to 2003-07-01 (218 threads) 2003-01-01 to 2003-04-01 (206 threads) 2002-10-01 to 2003-01-01 (172 threads) 2002-07-01 to 2002-10-01 (181 threads) 2002-04-01 to 2002-07-01 (131 threads) 2002-01-01 to 2002-04-01 (107 threads) 2001-10-01 to 2002-01-01 (63 threads) 2001-07-01 to 2001-10-01 (61 threads) 2001-04-01 to 2001-07-01 (51 threads)