Year	Percent
1996-01-01	2.6666700000000000
1997-01-01	2.5026100000000000
1998-01-01	3.3027500000000000
1999-01-01	3.2368000000000000
2000-01-01	2.5334300000000000
2001-01-01	3.2676100000000000
2002-01-01	1.8811900000000001
2003-01-01	1.9891500000000000
2004-01-01	1.9098500000000000
2005-01-01	1.5822800000000000
2006-01-01	1.7663799999999998
2007-01-01	1.6708900000000002
2008-01-01	1.6927100000000000
2009-01-01	1.5813600000000000
2010-01-01	1.5154600000000000
2011-01-01	1.4636900000000000
2012-01-01	3.0675900000000000
2013-01-01	1.2692100000000000
2014-01-01	1.0719100000000001
2015-01-01	1.9776000000000000
2016-01-01	1.6292500000000000