Year	Percent
1993-01-01	42.527700000000000
1994-01-01	24.005000000000000
1995-01-01	8.508230000000001
1996-01-01	7.667460000000000
1997-01-01	8.297970000000000
1998-01-01	9.859940000000000
1999-01-01	11.516500000000000
2000-01-01	12.768600000000000
2001-01-01	18.965000000000000
2002-01-01	22.332700000000000
2003-01-01	22.284400000000000
2004-01-01	25.595800000000000
2005-01-01	27.839200000000000
2006-01-01	31.721200000000000
2007-01-01	36.224000000000004
2008-01-01	40.596400000000000
2009-01-01	43.500300000000000
2010-01-01	45.872000000000000
2011-01-01	48.591600000000000
2012-01-01	51.482300000000000
2013-01-01	50.384800000000000
2014-01-01	51.575300000000000
2015-01-01	52.819700000000000
2016-01-01	52.326800000000000