Year	Percent
1995-01-01	49.9244
1996-01-01	39.3053
1997-01-01	31.8755
1998-01-01	22.7566
1999-01-01	27.3433
2000-01-01	29.8104
2001-01-01	21.7978
2002-01-01	19.2919
2003-01-01	25.3935
2004-01-01	29.4149
2005-01-01	34.1741
2006-01-01	35.8915
2007-01-01	32.2568
2008-01-01	17.6546
2009-01-01	17.8522
2010-01-01	18.3766
2011-01-01	20.3312
2012-01-01	17.6164
2013-01-01	15.1629
2014-01-01	13.1802
2015-01-01	12.8647
2016-01-01	15.3778