Year	Percent
1995-01-01	29.6758105625000
1996-01-01	29.5563481650000
1997-01-01	28.8420468950000
1998-01-01	27.7844345875000
1999-01-01	27.7563829950000
2000-01-01	28.1849335875000
2001-01-01	27.0350796625000
2002-01-01	24.6932713050000
2003-01-01	24.4208018800000
2004-01-01	25.3016570925000
2005-01-01	26.6024654225000
2006-01-01	26.6170118475000
2007-01-01	27.1946322925000
2008-01-01	27.6343982975000
2009-01-01	26.7957825525000
2010-01-01	26.9836704975000
2011-01-01	26.5718944325000
2012-01-01	43.4833333333333
2013-01-01	44.4000000000000
2014-01-01	44.4666666666667
2015-01-01	44.4083333333333
2016-01-01	44.2833333333333
2017-01-01	44.7750000000000