Year	Percent
1999-01-01	0.010013000000000000
2000-01-01	0.013934000000000000
2001-01-01	0.014731999999999999
2002-01-01	0.026891000000000000
2003-01-01	0.045212999999999996
2004-01-01	0.043989999999999994
2005-01-01	0.038132000000000000
2006-01-01	7.554460000000001000
2007-01-01	7.007989999999999500
2008-01-01	3.364210000000000000
2009-01-01	4.788930000000001000
2010-01-01	4.491090000000000000
2011-01-01	3.630610000000000000
2012-01-01	3.511970000000000000
2013-01-01	4.236460000000000000
2014-01-01	4.967760000000000000
2015-01-01	4.235000000000000000
2016-01-01	5.436300000000000000