Year	Percent
1995-01-01	4.88150
1996-01-01	3.75487
1997-01-01	3.37951
1998-01-01	3.96443
1999-01-01	5.21928
2000-01-01	6.47979
2001-01-01	7.42577
2002-01-01	8.32745
2003-01-01	8.90373
2004-01-01	9.36002
2005-01-01	11.97760
2006-01-01	16.62570
2007-01-01	22.43870
2008-01-01	30.21960
2009-01-01	33.34420
2010-01-01	30.96810
2011-01-01	32.59060
2012-01-01	34.79610
2013-01-01	39.10320
2014-01-01	44.92320
2015-01-01	50.84550
2016-01-01	56.85860