Year	Percent
1999-01-01	0.74202900000000000
2000-01-01	0.73343600000000000
2001-01-01	0.65534300000000000
2002-01-01	0.54494500000000000
2003-01-01	0.38898699999999997
2004-01-01	0.48608900000000005
2005-01-01	0.47965699999999994
2006-01-01	0.43982600000000000
2007-01-01	0.35320999999999997
2008-01-01	0.31193200000000004
2009-01-01	0.20441199999999998
2010-01-01	0.19553800000000002
2011-01-01	0.15264700000000000
2012-01-01	0.14985900000000000
2013-01-01	0.19687600000000000
2014-01-01	0.27871399999999996
2015-01-01	0.31359100000000000
2016-01-01	0.54493400000000000
2017-01-01	0.53778700000000000