Year	Percent
1992-01-01	71.2442
1993-01-01	65.7486
1994-01-01	45.8622
1995-01-01	74.0052
1996-01-01	68.0596
1997-01-01	68.5298
1998-01-01	80.6447
1999-01-01	83.4585
2000-01-01	88.2483
2001-01-01	91.7443
2002-01-01	94.1810
2003-01-01	97.6887
2004-01-01	96.7278
2005-01-01	96.0035
2006-01-01	97.1394
2007-01-01	98.1405
2008-01-01	98.3558
2009-01-01	96.6106
2010-01-01	96.0163
2011-01-01	96.7108
2012-01-01	96.8230
2013-01-01	97.0231
2014-01-01	96.8656
2015-01-01	96.2248
2016-01-01	95.3699