Year	Percent
1983-01-01	5.1046200000000000
1984-01-01	5.4519800000000010
1985-01-01	7.0789000000000000
1986-01-01	5.2019300000000000
1987-01-01	0.8573299999999999
1988-01-01	0.9686130000000000
1989-01-01	0.7102210000000000
1990-01-01	1.1329200000000001
1991-01-01	1.2169100000000000
1992-01-01	12.5090000000000000
1993-01-01	11.5147000000000000
1994-01-01	7.1173699999999990
1995-01-01	5.7704200000000000
1996-01-01	5.4739300000000000
1997-01-01	5.2187199999999990
1998-01-01	3.1437600000000000
1999-01-01	2.4710700000000000
2000-01-01	2.0099000000000000
2001-01-01	2.8117300000000000
2002-01-01	10.0481000000000000
2003-01-01	6.1786699999999990
2004-01-01	11.9586000000000000
2005-01-01	5.3172500000000000
2006-01-01	3.9790600000000000
2007-01-01	4.1204100000000000
2008-01-01	2.8391700000000000
2009-01-01	5.5550900000000000
2010-01-01	3.6866600000000000
2011-01-01	3.5955300000000000
2012-01-01	6.8366700000000000
2013-01-01	4.4739100000000000
2014-01-01	5.4959900000000000
2015-01-01	8.2127600000000010
2016-01-01	6.9791700000000000