Year	Percent
1996-01-01	36.1167
1997-01-01	39.2217
1998-01-01	43.0291
1999-01-01	40.2523
2000-01-01	44.1514
2001-01-01	54.8393
2002-01-01	58.2665
2003-01-01	60.7936
2004-01-01	63.2693
2005-01-01	64.6276
2006-01-01	75.6742
2007-01-01	82.3062
2008-01-01	79.3385
2009-01-01	79.6124
2010-01-01	79.8164
2011-01-01	80.9219
2012-01-01	80.1626
2013-01-01	80.7730
2014-01-01	81.5647
2015-01-01	82.0050
2016-01-01	81.7188