Year	Percent
1990-01-01	0.16901500000000000
1991-01-01	0.16510500000000000
1992-01-01	0.18102100000000002
1993-01-01	0.19412300000000000
1994-01-01	0.19995100000000000
1995-01-01	0.20987800000000000
1996-01-01	0.20224400000000000
1997-01-01	0.21259099999999997
1998-01-01	0.21237800000000000
1999-01-01	0.20002600000000000
2000-01-01	0.19938900000000000
2001-01-01	0.22167800000000001
2002-01-01	0.21302900000000000
2003-01-01	0.22128400000000000
2004-01-01	0.18472500000000000
2005-01-01	0.19150200000000000
2006-01-01	0.19023400000000000
2007-01-01	0.20051000000000000
2008-01-01	0.20339200000000002
2009-01-01	0.21672900000000000
2010-01-01	0.22352199999999997
2011-01-01	0.27350200000000000
2012-01-01	0.26681900000000003
2013-01-01	0.27131400000000000
2014-01-01	0.28454900000000000
2015-01-01	0.26973800000000003
2016-01-01	0.27723900000000000