Year	Percent
1994-01-01	16.68890
1995-01-01	14.36020
1996-01-01	11.26370
1997-01-01	10.26420
1998-01-01	9.41677
1999-01-01	8.64290
2000-01-01	9.65898
2001-01-01	11.77830
2002-01-01	13.49440
2003-01-01	15.33520
2004-01-01	17.97110
2005-01-01	24.60390
2006-01-01	34.25500
2007-01-01	43.66620
2008-01-01	54.79880
2009-01-01	62.58290
2010-01-01	61.11210
2011-01-01	58.70570
2012-01-01	57.06060
2013-01-01	54.78510
2014-01-01	53.61340
2015-01-01	52.48510
2016-01-01	50.98040