Year	Percent
1993-01-01	12.897500000000000
1994-01-01	14.491600000000000
1995-01-01	16.343300000000000
1996-01-01	17.745500000000000
1997-01-01	33.273100000000000
1998-01-01	42.197200000000000
1999-01-01	27.272300000000000
2000-01-01	21.414200000000000
2001-01-01	21.156600000000000
2002-01-01	22.814800000000000
2003-01-01	28.679300000000000
2004-01-01	33.570600000000000
2005-01-01	39.516700000000000
2006-01-01	42.044700000000000
2007-01-01	50.119600000000000
2008-01-01	39.803900000000000
2009-01-01	44.076000000000000
2010-01-01	43.146800000000000
2011-01-01	40.680900000000000
2012-01-01	37.238100000000000
2013-01-01	42.292700000000000
2014-01-01	46.028300000000000
2015-01-01	57.138999999999996
2016-01-01	48.432900000000000
2017-01-01	30.865600000000000