Year	Percent
1999-01-01	0.033285000000000000
2000-01-01	0.029669000000000000
2001-01-01	0.026336000000000002
2002-01-01	0.023464000000000000
2003-01-01	0.024740000000000000
2004-01-01	0.025020000000000000
2005-01-01	0.021751000000000000
2006-01-01	0.025233000000000002
2007-01-01	0.021131000000000000
2008-01-01	0.018002000000000000
2009-01-01	0.025554000000000000
2010-01-01	0.032005000000000000
2011-01-01	0.033783999999999995
2012-01-01	0.035417000000000004
2013-01-01	0.032309000000000000
2014-01-01	0.032318000000000000
2015-01-01	0.039460000000000000
2016-01-01	0.037947000000000000