Year	Percent
1989-01-01	2.1411599999999997
1990-01-01	2.6593000000000000
1991-01-01	2.2968100000000000
1992-01-01	2.2220200000000000
1993-01-01	2.1254400000000000
1994-01-01	2.4620800000000000
1995-01-01	2.8165600000000000
1996-01-01	6.8511500000000000
1997-01-01	7.2660899999999990
1998-01-01	6.0628900000000000
1999-01-01	7.9460000000000010
2000-01-01	4.0978800000000000
2001-01-01	3.9539900000000000
2002-01-01	4.1867900000000000
2003-01-01	2.8294400000000000
2004-01-01	2.0173600000000000
2005-01-01	2.4749800000000000
2006-01-01	2.7193000000000000
2007-01-01	0.9345350000000000
2008-01-01	0.8776760000000000
2009-01-01	47.1613000000000000
2010-01-01	37.4100000000000000
2011-01-01	34.6756000000000000
2012-01-01	24.4521000000000000
2013-01-01	25.0346000000000000
2014-01-01	24.3077000000000000
2015-01-01	13.9261000000000000
2016-01-01	12.7088000000000000