Year	Percent
1999-01-01	25.927900000000000
2000-01-01	44.146400000000000
2001-01-01	19.033600000000000
2002-01-01	21.597700000000000
2003-01-01	30.846200000000000
2004-01-01	13.625900000000000
2005-01-01	39.335500000000000
2006-01-01	23.866100000000000
2007-01-01	33.913700000000000
2008-01-01	36.374400000000000
2009-01-01	24.582900000000000
2010-01-01	15.794300000000000
2011-01-01	30.120100000000000
2012-01-01	23.415600000000000
2013-01-01	15.405999999999999
2014-01-01	13.584300000000000
2015-01-01	8.262910000000000
2016-01-01	5.118200000000000