Year	Percent
1994-01-01	20.696100000000000
1995-01-01	18.808000000000000
1996-01-01	16.912300000000000
1997-01-01	15.786800000000000
1998-01-01	17.485400000000000
1999-01-01	19.783400000000000
2000-01-01	21.206999999999997
2001-01-01	23.677400000000000
2002-01-01	26.261800000000000
2003-01-01	28.250400000000000
2004-01-01	31.663100000000000
2005-01-01	35.839300000000000
2006-01-01	39.623200000000000
2007-01-01	40.316800000000000
2008-01-01	40.200200000000000
2009-01-01	48.750900000000000
2010-01-01	48.313900000000000
2011-01-01	45.384800000000000
2012-01-01	45.038400000000000
2013-01-01	45.339200000000000
2014-01-01	44.751700000000000
2015-01-01	51.064800000000000
2016-01-01	58.711800000000000