Year	Number
2004-01-01	260
2005-01-01	252
2006-01-01	257
2007-01-01	254
2008-01-01	258
2009-01-01	255
2010-01-01	256
2011-01-01	236
2012-01-01	232
2013-01-01	232
2014-01-01	233
2015-01-01	225
2016-01-01	221