Year	Percent
1996-01-01	35.9555
1997-01-01	42.0415
1998-01-01	29.3529
1999-01-01	30.0961
2000-01-01	34.3277
2001-01-01	14.1428
2002-01-01	43.2304
2003-01-01	50.6164
2004-01-01	36.2131
2005-01-01	37.2723
2006-01-01	33.3970
2007-01-01	32.5951
2008-01-01	28.5915
2009-01-01	26.4668
2010-01-01	30.9558
2011-01-01	32.5789
2012-01-01	27.1464
2013-01-01	26.9923
2014-01-01	25.1466