Year	Percent
1999-01-01	0.5484319999999999
2000-01-01	0.4998700000000000
2001-01-01	0.5457160000000000
2002-01-01	0.9251990000000000
2003-01-01	0.8417469999999999
2004-01-01	1.5976200000000000
2005-01-01	1.6845299999999999
2006-01-01	2.7065599999999996
2007-01-01	3.6416900000000000
2008-01-01	1.2383800000000000
2009-01-01	1.5070200000000000
2010-01-01	1.5534400000000000
2011-01-01	1.0786500000000000
2012-01-01	0.9026799999999999
2013-01-01	1.0437800000000000
2014-01-01	1.2298200000000001
2015-01-01	1.2857700000000000
2016-01-01	1.3797200000000000