Year	Number
2004-01-01	218
2005-01-01	244
2006-01-01	269
2007-01-01	316
2008-01-01	350
2009-01-01	345
2010-01-01	342
2011-01-01	238
2012-01-01	239
2013-01-01	216
2014-01-01	212
2015-01-01	210
2016-01-01	211