Year	Percent
1997-01-01	0.1955090000000000
1998-01-01	0.2485720000000000
1999-01-01	0.2891050000000000
2000-01-01	0.3148710000000000
2001-01-01	0.4194250000000000
2002-01-01	0.6370470000000000
2003-01-01	0.5309800000000000
2004-01-01	0.5386660000000000
2005-01-01	0.7120560000000000
2006-01-01	1.0463700000000000
2007-01-01	1.0375400000000000
2008-01-01	0.8012800000000000
2009-01-01	0.6728410000000000
2010-01-01	0.5608800000000000
2011-01-01	0.5432520000000001
2012-01-01	0.5107619999999999
2013-01-01	0.5397010000000000
2014-01-01	0.4677470000000000
2015-01-01	0.5339950000000000