Year	Percent
1995-01-01	57.1841
1996-01-01	41.3908
1997-01-01	28.6612
1998-01-01	27.9769
1999-01-01	29.2373
2000-01-01	32.0650
2001-01-01	36.5510
2002-01-01	41.7558
2003-01-01	45.9662
2004-01-01	49.8918
2005-01-01	59.8205
2006-01-01	71.3818
2007-01-01	81.0864
2008-01-01	87.1646
2009-01-01	88.8303
2010-01-01	89.6769
2011-01-01	91.7484
2012-01-01	93.7151
2013-01-01	95.2447
2014-01-01	96.1495
2015-01-01	96.8988
2016-01-01	97.4635