Year	Percent
1992-01-01	2.0833300000000000
1993-01-01	2.2500000000000000
1994-01-01	3.8333300000000000
1995-01-01	4.3500000000000000
1996-01-01	7.1750000000000000
1997-01-01	7.1750000000000000
1998-01-01	7.1750000000000000
1999-01-01	8.6691700000000000
2000-01-01	13.8000000000000000
2001-01-01	11.9292000000000000
2002-01-01	6.7658300000000000
2003-01-01	5.8953400000000000
2004-01-01	5.1548300000000005
2005-01-01	7.9874500000000000
2006-01-01	7.7125200000000000
2007-01-01	8.4405200000000000
2008-01-01	6.2169000000000000
2009-01-01	5.8885000000000000
2010-01-01	6.4047900000000000
2011-01-01	6.5703500000000000
2012-01-01	5.4554400000000000
2013-01-01	5.6624000000000000
2014-01-01	6.7438899999999995
2015-01-01	7.3340300000000000
2016-01-01	8.8233300000000000