Year	Percent
1996-01-01	35.198300000000000
1997-01-01	56.728500000000000
1998-01-01	38.991000000000000
1999-01-01	51.834200000000000
2000-01-01	43.038999999999994
2001-01-01	49.063200000000000
2002-01-01	54.143600000000000
2003-01-01	40.206700000000000
2004-01-01	42.438900000000000
2005-01-01	39.968800000000000
2006-01-01	38.588800000000000
2007-01-01	35.091500000000000
2008-01-01	32.475200000000000
2009-01-01	30.711500000000000
2010-01-01	31.262200000000000
2011-01-01	31.956100000000000
2012-01-01	30.640600000000000
2013-01-01	30.221700000000000
2014-01-01	29.776800000000000