Year	Percent
1996-01-01	30.8877
1997-01-01	36.8820
1998-01-01	30.4830
1999-01-01	42.6661
2000-01-01	35.2622
2001-01-01	49.9969
2002-01-01	46.9756
2003-01-01	54.2272
2004-01-01	51.9979
2005-01-01	51.2571
2006-01-01	47.9446
2007-01-01	47.4859
2008-01-01	51.0467
2009-01-01	56.6423
2010-01-01	65.0261
2011-01-01	55.6306
2012-01-01	51.4270
2013-01-01	42.0621
2014-01-01	43.5065