Year	Number
2004-01-01	399
2005-01-01	380
2006-01-01	378
2007-01-01	365
2008-01-01	361
2009-01-01	340
2010-01-01	321
2011-01-01	296
2012-01-01	300
2013-01-01	296
2014-01-01	305
2015-01-01	263
2016-01-01	260
2017-01-01	261