Year	Percent
1998-01-01	0.009670999999999999
1999-01-01	0.011120000000000000
2000-01-01	0.009220000000000000
2001-01-01	0.008056000000000000
2002-01-01	0.008912999999999999
2003-01-01	0.009047000000000000
2004-01-01	0.018155000000000000
2005-01-01	0.006412999999999999
2006-01-01	0.006923000000000000
2007-01-01	0.010345000000000000
2008-01-01	0.010976000000000000
2009-01-01	0.022252000000000000
2010-01-01	0.014825000000000000
2011-01-01	0.011352000000000000
2012-01-01	0.010430000000000000
2013-01-01	0.012972999999999998
2014-01-01	0.012714000000000000
2015-01-01	0.018550999999999998