Year	Percent
1996-01-01	40.434800000000000
1997-01-01	53.757800000000000
1998-01-01	55.425400000000000
1999-01-01	49.002700000000000
2000-01-01	55.799800000000000
2001-01-01	57.798100000000000
2002-01-01	52.393000000000000
2003-01-01	47.088400000000000
2004-01-01	38.250300000000000
2005-01-01	30.862500000000000
2006-01-01	26.408000000000000
2007-01-01	25.299700000000000
2008-01-01	17.262900000000000
2009-01-01	22.000999999999998
2010-01-01	22.090500000000000
2011-01-01	27.053400000000000
2012-01-01	25.643500000000000
2013-01-01	26.714900000000000
2014-01-01	31.477800000000000
2015-01-01	31.191700000000000
2016-01-01	30.313900000000000