Year	Percent
1998-01-01	0.017942000000000000
1999-01-01	0.015680000000000000
2000-01-01	0.023906999999999998
2001-01-01	0.043967000000000000
2002-01-01	0.036941000000000000
2003-01-01	0.044579000000000000
2004-01-01	0.034190000000000000
2005-01-01	0.028964000000000000
2006-01-01	0.027232000000000000
2007-01-01	0.025091000000000000
2008-01-01	0.021597000000000000
2009-01-01	0.023522000000000000
2010-01-01	0.024595000000000000
2011-01-01	0.023968000000000000
2012-01-01	0.021020000000000000
2013-01-01	0.018528000000000000