Year	Percent
1998-01-01	1.6334000000000000
1999-01-01	1.1235000000000000
2000-01-01	5.4092100000000000
2001-01-01	6.0286000000000000
2002-01-01	2.4461300000000000
2003-01-01	23.7084000000000000
2004-01-01	31.0461000000000000
2005-01-01	14.5118000000000000
2006-01-01	9.0481900000000000
2007-01-01	21.0500000000000000
2008-01-01	11.1558000000000000
2009-01-01	18.1906000000000000
2010-01-01	1.9099500000000000
2011-01-01	2.1725700000000000
2012-01-01	4.9182400000000000
2013-01-01	2.8352600000000000
2014-01-01	3.7707000000000000
2015-01-01	10.3717000000000000
2016-01-01	2.3739700000000000
2017-01-01	1.7867400000000002