Year	Number
2004-01-01	339
2005-01-01	338
2006-01-01	332
2007-01-01	331
2008-01-01	328
2009-01-01	326
2010-01-01	321
2011-01-01	313
2012-01-01	298
2013-01-01	283
2014-01-01	275
2015-01-01	266
2016-01-01	261