Year	Percent
1995-01-01	27.7371
1996-01-01	31.5064
1997-01-01	23.3368
1998-01-01	21.7547
1999-01-01	17.8722
2000-01-01	35.3134
2001-01-01	42.1376
2002-01-01	32.3154
2003-01-01	27.7138
2004-01-01	41.9939
2005-01-01	31.3012
2006-01-01	33.4179
2007-01-01	33.0004
2008-01-01	19.9053
2009-01-01	19.6057
2010-01-01	23.7063
2011-01-01	21.1655
2012-01-01	14.8954
2013-01-01	18.1227
2014-01-01	18.6843
2015-01-01	19.6205
2016-01-01	15.3424