Year	Number
2004-01-01	201
2005-01-01	237
2006-01-01	289
2007-01-01	281
2008-01-01	261
2009-01-01	262
2010-01-01	251
2011-01-01	253
2012-01-01	233
2013-01-01	208
2014-01-01	245
2015-01-01	243
2016-01-01	223
2017-01-01	231