Year	Percent
1995-01-01	15.5968
1996-01-01	13.1456
1997-01-01	12.3484
1998-01-01	13.2425
1999-01-01	12.3780
2000-01-01	10.8609
2001-01-01	10.7098
2002-01-01	12.8184
2003-01-01	15.2187
2004-01-01	17.9652
2005-01-01	20.1891
2006-01-01	23.6069
2007-01-01	25.9861
2008-01-01	24.8070
2009-01-01	26.4119
2010-01-01	28.4587
2011-01-01	26.6219
2012-01-01	28.2481
2013-01-01	30.7225
2014-01-01	31.2649
2015-01-01	31.5741
2016-01-01	33.0994