Year	Percent
1995-01-01	19.7137
1996-01-01	21.5868
1997-01-01	18.5840
1998-01-01	17.8801
1999-01-01	16.1959
2000-01-01	18.4009
2001-01-01	24.7921
2002-01-01	16.1864
2003-01-01	17.9746
2004-01-01	16.6682
2005-01-01	15.2758
2006-01-01	13.9996
2007-01-01	16.5879
2008-01-01	19.7636
2009-01-01	17.5274
2010-01-01	19.0292
2011-01-01	20.6452
2012-01-01	14.8835
2013-01-01	15.0241
2014-01-01	15.8946
2015-01-01	17.7498
2016-01-01	22.7219