Year	Number
2004-01-01	107
2005-01-01	111
2006-01-01	122
2007-01-01	132
2008-01-01	154
2009-01-01	164
2010-01-01	202
2011-01-01	224
2012-01-01	227
2013-01-01	259
2014-01-01	281
2015-01-01	292
2016-01-01	326
2017-01-01	325