Year	Percent
1998-01-01	39.156300000000000
1999-01-01	65.919300000000000
2000-01-01	55.900000000000000
2001-01-01	54.400000000000000
2002-01-01	50.648200000000000
2003-01-01	49.851000000000006
2004-01-01	39.947400000000000
2005-01-01	42.404400000000000
2006-01-01	44.110100000000000
2007-01-01	39.076200000000000
2008-01-01	42.012300000000000
2009-01-01	40.810100000000000
2010-01-01	36.522900000000000
2011-01-01	40.302800000000000
2012-01-01	43.406100000000000
2013-01-01	9.712450000000000
2014-01-01	28.846800000000000
2015-01-01	21.095700000000000
2016-01-01	37.256600000000000