Year	Percent
1983-01-01	4.4321800000000010
1984-01-01	4.0246500000000000
1985-01-01	6.2108200000000000
1986-01-01	7.3799600000000005
1987-01-01	10.9171000000000000
1988-01-01	5.0614500000000000
1989-01-01	5.1621100000000000
1990-01-01	8.2276800000000000
1991-01-01	6.5012700000000000
1992-01-01	6.3489900000000010
1993-01-01	6.9518100000000010
1994-01-01	8.0411600000000010
1995-01-01	2.2822500000000000
1996-01-01	1.8919500000000000
1997-01-01	1.1283400000000000
1998-01-01	1.9364299999999999
1999-01-01	5.4256500000000000
2000-01-01	3.8796500000000000
2001-01-01	3.4842000000000000
2002-01-01	2.9516900000000000
2003-01-01	3.1024400000000000
2004-01-01	3.5893500000000000
2005-01-01	13.7519000000000000
2006-01-01	5.9938600000000000
2007-01-01	2.5942100000000000
2008-01-01	2.5143500000000000
2009-01-01	4.8492800000000000
2010-01-01	4.9650400000000000
2011-01-01	4.2821400000000000
2012-01-01	3.7788600000000000
2013-01-01	6.3953800000000000
2014-01-01	8.9025300000000000
2015-01-01	8.9091899999999990
2016-01-01	11.4815000000000000