Year	Percent
1990-01-01	0.5679310000000001
1991-01-01	0.5732740000000000
1992-01-01	0.6405820000000000
1993-01-01	0.6486510000000000
1994-01-01	0.7624330000000000
1995-01-01	0.7386640000000000
1996-01-01	0.8818469999999999
1997-01-01	1.1548300000000000
1998-01-01	1.0866600000000000
1999-01-01	1.5035900000000000
2000-01-01	1.9783900000000000
2001-01-01	2.0488600000000000
2002-01-01	2.1091400000000000
2003-01-01	2.4995700000000003
2004-01-01	2.9799100000000000
2005-01-01	2.6889300000000000
2006-01-01	3.1878599999999997
2007-01-01	3.9554300000000002
2008-01-01	3.0476900000000002
2009-01-01	3.2471300000000000
2010-01-01	3.4840600000000000
2011-01-01	3.1251900000000004
2012-01-01	2.4670900000000002
2013-01-01	2.6857900000000003
2014-01-01	2.8359900000000002
2015-01-01	3.3287699999999996
2016-01-01	3.1717800000000000