Year	Percent
1994-01-01	12.8749000000000000
1995-01-01	22.6721000000000000
1996-01-01	18.8414000000000000
1997-01-01	10.5666000000000000
1998-01-01	7.7556199999999995
1999-01-01	4.5490100000000000
2000-01-01	2.9542700000000000
2001-01-01	3.0841800000000000
2002-01-01	3.5875500000000000
2003-01-01	7.1066899999999995
2004-01-01	9.8246800000000000
2005-01-01	8.6748300000000000
2006-01-01	7.9260199999999990
2007-01-01	7.5155500000000000
2008-01-01	8.6906100000000010
2009-01-01	16.7521000000000000
2010-01-01	16.4596000000000000
2011-01-01	14.8504000000000000
2012-01-01	24.5802000000000000
2013-01-01	24.0617000000000000
2014-01-01	39.8615000000000000
2015-01-01	38.6903000000000000
2016-01-01	38.8488000000000000