Year	Percent
1995-01-01	21.4208
1996-01-01	20.7193
1997-01-01	22.7115
1998-01-01	26.2431
1999-01-01	18.4431
2000-01-01	21.7876
2001-01-01	36.2730
2002-01-01	48.9086
2003-01-01	52.1147
2004-01-01	57.4344
2005-01-01	54.1722
2006-01-01	65.3824
2007-01-01	71.7892
2008-01-01	61.8088
2009-01-01	56.8757
2010-01-01	49.7923
2011-01-01	42.8574
2012-01-01	39.8571
2013-01-01	36.5629
2014-01-01	35.5320
2015-01-01	33.3314
2016-01-01	30.3763