Year	Percent
1983-01-01	2.4408100000000000
1984-01-01	2.7847400000000000
1985-01-01	4.0160100000000000
1986-01-01	3.1637200000000000
1987-01-01	3.2723600000000000
1988-01-01	1.9295400000000003
1989-01-01	1.5918000000000000
1990-01-01	3.0950500000000000
1991-01-01	1.8849700000000000
1992-01-01	1.0163900000000000
1993-01-01	2.2387099999999998
1994-01-01	5.3008900000000000
1995-01-01	2.2006200000000002
1996-01-01	1.1515900000000000
1997-01-01	7.8176200000000000
1998-01-01	8.8460100000000000
1999-01-01	8.2013800000000000
2000-01-01	7.4679800000000010
2001-01-01	9.3533600000000000
2002-01-01	9.4511300000000010
2003-01-01	11.4714000000000000
2004-01-01	4.8079400000000000
2005-01-01	3.5806600000000000
2006-01-01	3.1412600000000000
2007-01-01	4.1291900000000000
2008-01-01	3.5363400000000000
2009-01-01	1.6896700000000000
2010-01-01	2.3620500000000000
2011-01-01	1.2076100000000000
2012-01-01	1.7382600000000000
2013-01-01	1.7010100000000000
2014-01-01	5.0318000000000000
2015-01-01	3.8584500000000000
2016-01-01	8.3470700000000000