Year	Percent
1992-01-01	60.4518000000000000
1993-01-01	32.2170000000000000
1994-01-01	5.8359400000000000
1995-01-01	2.7669500000000000
1996-01-01	2.6337099999999998
1997-01-01	3.2178200000000000
1998-01-01	4.5818900000000005
1999-01-01	6.1806300000000010
2000-01-01	7.6304700000000000
2001-01-01	7.9317000000000000
2002-01-01	7.8759000000000000
2003-01-01	8.0348500000000000
2004-01-01	8.6349600000000010
2005-01-01	9.1135800000000000
2006-01-01	9.3442899999999990
2007-01-01	10.0175000000000000
2008-01-01	10.8212000000000000
2009-01-01	14.5959000000000000
2010-01-01	16.2264000000000000
2011-01-01	18.1103000000000000
2012-01-01	20.0864000000000000
2013-01-01	23.3141000000000000
2014-01-01	25.2784000000000000
2015-01-01	28.0720000000000000
2016-01-01	32.0955000000000000