January 2008: 256,100 (67.4%) February 2008: 254,600 (66.9%) March 2008: 252,900 (66.4%) April 2008: 252,800 (66.3%) May 2008: 251,800 (66.0%) June 2008: 252,700 (66.1%) July 2008: 252,300 (65.9%) August 2008: 255,000 (66.6%) September 2008: 258,400 (67.4%) October 2008: 261,700 (68.1%) November 2008: 263,600 (68.5%) December 2008: 259,200 (67.3%) | January 2009: 255,300 (66.2%) February 2009: 253,400 (65.7%) March 2009: 252,700 (65.4%) April 2009: 251,500 (65.1%) May 2009: 250,300 (64.7%) June 2009: 250,500 (64.7%) July 2009: 250,900 (64.7%) August 2009: 252,300 (65.0%) September 2009: 253,800 (65.3%) October 2009: 253,900 (65.2%) November 2009: 250,500 (64.3%) December 2009: 247,200 (63.4%) | January 2010: 244,800 (62.7%) February 2010: 246,000 (62.9%) March 2010: 249,500 (63.7%) April 2010: 254,100 (64.9%) May 2010: 260,500 (66.4%) June 2010: 264,600 (67.4%) July 2010: 269,100 (68.4%) August 2010: 267,200 (67.8%) September 2010: 264,000 (66.9%) October 2010: 257,200 (65.1%) November 2010: 255,500 (64.6%) December 2010: 256,600 (64.8%) |