Year	Percent
2005-01-01	43.1751504817361
2006-01-01	43.8278091581289
2007-01-01	44.4530375100210
2008-01-01	44.6607435106267
2009-01-01	43.6885851398741
2010-01-01	43.3299949430847
2011-01-01	43.3384305070705
2012-01-01	42.9267362192229