Year	Percent
1997-01-01	0.0055000000000000000
1998-01-01	0.0018480000000000000
1999-01-01	0.0018390000000000001
2000-01-01	0.0000550000000000000
2001-01-01	0.0030670000000000003
2002-01-01	0.0045170000000000000
2003-01-01	0.0096470000000000000
2004-01-01	0.0112800000000000000
2005-01-01	0.0187040000000000000
2006-01-01	0.0360860000000000000
2007-01-01	0.0369100000000000050
2008-01-01	0.0353700000000000000
2009-01-01	0.0569940000000000000
2010-01-01	0.0891120000000000000
2011-01-01	0.1148700000000000000
2012-01-01	0.1784130000000000200
2013-01-01	0.1654650000000000000
2014-01-01	0.1189200000000000000
2015-01-01	0.1431720000000000000