Year	Percent
1990-01-01	2.1669400000000003
1991-01-01	2.1621300000000000
1992-01-01	2.1788100000000000
1993-01-01	2.2929800000000000
1994-01-01	2.3049200000000000
1995-01-01	2.3913000000000000
1996-01-01	2.4035700000000000
1997-01-01	2.3238900000000000
1998-01-01	2.2032900000000000
1999-01-01	2.1799700000000000
2000-01-01	2.1530000000000000
2001-01-01	2.2094900000000000
2002-01-01	2.2974300000000000
2003-01-01	2.4870099999999997
2004-01-01	2.4859600000000000
2005-01-01	2.5161500000000000
2006-01-01	2.3672800000000000
2007-01-01	2.3152900000000000
2008-01-01	2.3191599999999997
2009-01-01	2.3860799999999998
2010-01-01	2.2804200000000000
2011-01-01	2.3221800000000000
2012-01-01	2.3139900000000000
2013-01-01	2.2912600000000000
2014-01-01	2.2477300000000000
2015-01-01	2.0135400000000003
2016-01-01	2.0105700000000000