Year	Percent
1993-01-01	0.3749420000000000
1994-01-01	0.4048100000000000
1995-01-01	0.3370910000000000
1996-01-01	0.3307960000000000
1997-01-01	0.3397790000000000
1998-01-01	2.3137900000000000
1999-01-01	2.3427400000000000
2000-01-01	2.7896400000000003
2001-01-01	2.8313200000000003
2002-01-01	2.8711300000000000
2003-01-01	2.7521100000000000
2004-01-01	2.7614200000000000
2005-01-01	2.6012800000000000
2006-01-01	2.5252300000000000
2007-01-01	2.1506500000000000
2008-01-01	1.8153000000000000
2009-01-01	1.3671900000000000
2010-01-01	1.3568600000000000
2011-01-01	1.2505800000000000
2012-01-01	1.2245700000000002
2013-01-01	1.1554400000000000
2014-01-01	2.2556400000000000
2015-01-01	2.2161800000000000
2016-01-01	1.8514200000000000
2017-01-01	1.7433200000000000