Year	Percent
1992-01-01	15.0675000000000000
1993-01-01	12.8196000000000000
1994-01-01	3.4828600000000000
1995-01-01	5.2529999999999990
1996-01-01	6.6781000000000000
1997-01-01	7.1075800000000005
1998-01-01	10.0570000000000000
1999-01-01	12.8027000000000000
2000-01-01	12.1314000000000000
2001-01-01	9.9575900000000000
2002-01-01	8.5594800000000000
2003-01-01	7.0867000000000000
2004-01-01	5.2223700000000000
2005-01-01	3.2293600000000000
2006-01-01	1.8121200000000002
2007-01-01	1.2724799999999998
2008-01-01	1.6794799999999999
2009-01-01	4.3049000000000000
2010-01-01	6.0195500000000000
2011-01-01	6.3307000000000000
2012-01-01	7.4160500000000000
2013-01-01	9.1059900000000000
2014-01-01	14.7925000000000000
2015-01-01	20.9579000000000000
2016-01-01	17.1195000000000000