Year	Percent
1995-01-01	51.6636608925000
1996-01-01	51.7196745650000
1997-01-01	51.3686800275000
1998-01-01	50.7543142850000
1999-01-01	49.5200330475000
2000-01-01	48.4305741275000
2001-01-01	48.3779330950000
2002-01-01	48.1691210975000
2003-01-01	47.3208378800000
2004-01-01	46.7821592125000
2005-01-01	46.2541218950000
2006-01-01	45.7179892575000
2007-01-01	44.9774531375000
2008-01-01	44.6869741175000
2009-01-01	43.5783460875000
2010-01-01	43.1172308250000
2011-01-01	43.0926229225000
2012-01-01	37.3083333333333
2013-01-01	37.0583333333333
2014-01-01	36.0166666666667
2015-01-01	36.1583333333333
2016-01-01	35.7916666666667
2017-01-01	35.9916666666667