Year	Percent
1994-01-01	2.4737299999999998
1995-01-01	2.2155400000000003
1996-01-01	2.1761900000000000
1997-01-01	2.1494200000000000
1998-01-01	2.2989000000000000
1999-01-01	2.3726700000000003
2000-01-01	2.2915000000000000
2001-01-01	1.1304900000000000
2002-01-01	5.9360500000000000
2003-01-01	6.1566600000000000
2004-01-01	5.9268900000000000
2005-01-01	9.9808600000000000
2006-01-01	19.3566000000000000
2007-01-01	29.3276000000000000
2008-01-01	32.4586000000000000
2009-01-01	48.8569000000000000
2010-01-01	57.6875000000000000
2011-01-01	1.9885700000000002
2012-01-01	1.7173400000000000
2013-01-01	1.9397900000000001
2014-01-01	1.8067500000000000
2015-01-01	2.2045000000000000
2016-01-01	2.2069799999999997