Year	Number
2004-01-01	0.0165
2005-01-01	0.0191
2006-01-01	0.0203
2007-01-01	0.0203
2008-01-01	0.0203
2009-01-01	0.0229
2010-01-01	0.0178
2011-01-01	0.0178
2012-01-01	0.0178
2013-01-01	0.0203
2014-01-01	0.0203
2015-01-01	0.0229
2016-01-01	0.0229
2017-01-01	0.0203