Year	Percent
1996-01-01	25.7034
1997-01-01	26.0638
1998-01-01	32.1538
1999-01-01	29.7882
2000-01-01	31.8499
2001-01-01	39.9791
2002-01-01	37.7719
2003-01-01	38.3762
2004-01-01	36.4356
2005-01-01	41.0723
2006-01-01	39.3735
2007-01-01	31.4925
2008-01-01	30.6151
2009-01-01	31.3599
2010-01-01	33.6249
2011-01-01	34.0001
2012-01-01	36.3763
2013-01-01	36.7632
2014-01-01	36.6533
2015-01-01	34.7091
2016-01-01	32.1109