Year	Percent
1994-01-01	15.6434
1995-01-01	17.9412
1996-01-01	23.8135
1997-01-01	29.7305
1998-01-01	33.7976
1999-01-01	34.4313
2000-01-01	35.9255
2001-01-01	46.1538
2002-01-01	52.5543
2003-01-01	52.7648
2004-01-01	53.7026
2005-01-01	54.9062
2006-01-01	57.8625
2007-01-01	61.7253
2008-01-01	64.5303
2009-01-01	69.1600
2010-01-01	73.2170
2011-01-01	77.3864
2012-01-01	74.5588
2013-01-01	69.5285
2014-01-01	69.2678
2015-01-01	69.6461
2016-01-01	70.0638