Year	Percent
1996-01-01	2.2869200000000003
1997-01-01	1.8104400000000000
1998-01-01	2.0110700000000000
1999-01-01	1.6801900000000000
2000-01-01	1.3469799999999998
2001-01-01	1.6239100000000000
2002-01-01	1.0124700000000000
2003-01-01	1.4166200000000000
2004-01-01	3.1046000000000000
2005-01-01	2.4121700000000000
2006-01-01	2.1753099999999996
2007-01-01	2.0805000000000000
2008-01-01	1.8571300000000000
2009-01-01	1.5715400000000000
2010-01-01	1.2753900000000000
2011-01-01	1.3624900000000000
2012-01-01	1.0507500000000000
2013-01-01	0.9209719999999999
2014-01-01	0.9131630000000000
2015-01-01	0.9107250000000000
2016-01-01	0.8425560000000000