Year	Number
2004-01-01	338
2005-01-01	337
2006-01-01	331
2007-01-01	330
2008-01-01	327
2009-01-01	325
2010-01-01	320
2011-01-01	312
2012-01-01	297
2013-01-01	283
2014-01-01	275
2015-01-01	266
2016-01-01	261