Year	Percent
1996-01-01	66.1731000000000000
1997-01-01	40.5518000000000000
1998-01-01	15.7865000000000000
1999-01-01	38.0197000000000000
2000-01-01	47.7533000000000000
2001-01-01	32.3319000000000000
2002-01-01	24.6346000000000000
2003-01-01	29.9048000000000000
2004-01-01	29.1918000000000000
2005-01-01	19.0983000000000000
2006-01-01	22.6643000000000000
2007-01-01	28.0872000000000000
2008-01-01	20.2509000000000000
2009-01-01	0.9139200000000001
2010-01-01	6.5186400000000000
2011-01-01	11.2994000000000000
2012-01-01	4.3180000000000005
2013-01-01	9.1561700000000000
2014-01-01	5.3567900000000000
2015-01-01	6.3663700000000000
2016-01-01	12.8060000000000000