Year	Percent
1997-01-01	0.93120900000000010
1998-01-01	1.26995000000000000
1999-01-01	2.07684000000000020
2000-01-01	1.61887000000000000
2001-01-01	1.95160000000000000
2002-01-01	2.29643000000000000
2003-01-01	1.83259000000000020
2004-01-01	1.54413000000000000
2005-01-01	1.17307000000000000
2006-01-01	0.86322900000000010
2007-01-01	0.64625000000000000
2008-01-01	0.47013000000000000
2009-01-01	0.47237299999999993
2010-01-01	0.30896799999999996
2011-01-01	0.12796200000000000
2012-01-01	0.10672800000000000
2013-01-01	0.09314299999999999
2014-01-01	0.08862300000000001
2015-01-01	0.08801300000000000