Year	Percent
1994-01-01	39.0049
1995-01-01	10.2447
1996-01-01	11.7993
1997-01-01	11.6016
1998-01-01	19.5846
1999-01-01	11.9412
2000-01-01	11.6006
2001-01-01	12.8770
2002-01-01	12.6434
2003-01-01	13.4445
2004-01-01	14.7281
2005-01-01	16.3842
2006-01-01	18.8298
2007-01-01	19.1909
2008-01-01	19.0170
2009-01-01	23.5257
2010-01-01	22.9835
2011-01-01	22.1021
2012-01-01	22.6470
2013-01-01	24.4928
2014-01-01	25.4573
2015-01-01	29.5082
2016-01-01	32.7811