Year	Percent
1995-01-01	32.5799
1996-01-01	40.3894
1997-01-01	64.7333
1998-01-01	34.4760
1999-01-01	39.1239
2000-01-01	43.3550
2001-01-01	45.5769
2002-01-01	51.4203
2003-01-01	44.4700
2004-01-01	30.2213
2005-01-01	75.8806
2006-01-01	78.3054
2007-01-01	74.7934
2008-01-01	24.0109
2009-01-01	44.5335
2010-01-01	33.3630
2011-01-01	20.5911
2012-01-01	18.5277
2013-01-01	11.6738
2014-01-01	16.9136
2015-01-01	19.8264
2016-01-01	31.2527