Year	Percent
1992-01-01	0.15274200000000002
1993-01-01	0.18497200000000000
1994-01-01	0.21053500000000000
1995-01-01	0.21374800000000000
1996-01-01	0.21402800000000002
1997-01-01	0.24389899999999998
1998-01-01	0.29712900000000000
1999-01-01	0.28952700000000000
2000-01-01	0.26690200000000000
2001-01-01	0.16830599999999998
2002-01-01	0.17390000000000000
2003-01-01	0.18059200000000000
2004-01-01	0.19210000000000000
2005-01-01	0.18166000000000000
2006-01-01	0.20245200000000000
2007-01-01	0.27966399999999997
2008-01-01	0.22956200000000000
2009-01-01	0.35144899999999996
2010-01-01	0.38380400000000000
2011-01-01	0.36663600000000000
2012-01-01	0.43450200000000005
2013-01-01	0.49443400000000004
2014-01-01	0.58934600000000000
2015-01-01	0.69775800000000000