Year	Number
2004-01-01	604
2005-01-01	507
2006-01-01	428
2007-01-01	401
2008-01-01	364
2009-01-01	336
2010-01-01	308
2011-01-01	297
2012-01-01	271
2013-01-01	254
2014-01-01	241
2015-01-01	220
2016-01-01	202