Year	Percent
1996-01-01	29.873000000000000
1997-01-01	30.158700000000000
1998-01-01	21.883700000000000
1999-01-01	48.217100000000000
2000-01-01	53.795700000000000
2001-01-01	40.796400000000000
2002-01-01	46.616900000000000
2003-01-01	43.462200000000000
2004-01-01	43.644900000000000
2005-01-01	42.171200000000000
2006-01-01	34.575600000000000
2007-01-01	32.699000000000000
2008-01-01	28.040600000000000
2009-01-01	30.499000000000002
2010-01-01	23.769600000000000
2011-01-01	22.751300000000000
2012-01-01	25.500999999999998
2013-01-01	37.247400000000000
2014-01-01	39.429700000000000
2015-01-01	36.198400000000000
2016-01-01	34.486800000000000