Year	Percent
1996-01-01	1.8549900000000001
1997-01-01	2.9160200000000000
1998-01-01	5.3902199999999990
1999-01-01	6.3507400000000000
2000-01-01	8.4259200000000000
2001-01-01	8.6734400000000000
2002-01-01	9.0953300000000000
2003-01-01	8.7159300000000000
2004-01-01	7.2997000000000000
2005-01-01	4.3826400000000000
2006-01-01	4.4434000000000000
2007-01-01	6.9762900000000000
2008-01-01	8.4223699999999990
2009-01-01	8.4180100000000000
2010-01-01	6.7820800000000006
2011-01-01	5.0086900000000005
2012-01-01	10.4619000000000000
2013-01-01	17.7297000000000000
2014-01-01	28.3586000000000000
2015-01-01	31.6658000000000000
2016-01-01	30.3194000000000000