Year	Percent
1996-01-01	60.7219
1997-01-01	74.6151
1998-01-01	57.3234
1999-01-01	97.1784
2000-01-01	73.9023
2001-01-01	82.9451
2002-01-01	80.4394
2003-01-01	87.6910
2004-01-01	81.0251
2005-01-01	77.3823
2006-01-01	70.8551
2007-01-01	90.7766
2008-01-01	71.7846
2009-01-01	51.5175
2010-01-01	51.2367
2011-01-01	46.5396
2012-01-01	48.3369
2013-01-01	44.1046
2014-01-01	41.2125