Year	Percent
1995-01-01	44.013999999999996
1996-01-01	41.448300000000000
1997-01-01	39.177000000000000
1998-01-01	27.671999999999997
1999-01-01	21.513800000000000
2000-01-01	20.615100000000000
2001-01-01	17.735900000000000
2002-01-01	14.940400000000000
2003-01-01	20.418600000000000
2004-01-01	21.260300000000000
2005-01-01	25.123100000000000
2006-01-01	20.591500000000000
2007-01-01	20.217900000000000
2008-01-01	19.799600000000000
2009-01-01	24.189200000000000
2010-01-01	11.860900000000000
2011-01-01	9.662289999999999
2012-01-01	19.052700000000000
2013-01-01	23.008000000000003
2014-01-01	19.164700000000000
2015-01-01	21.914400000000000
2016-01-01	21.196900000000000