Year	Number
2005-01-01	242
2006-01-01	230
2007-01-01	79
2008-01-01	106
2009-01-01	106
2010-01-01	511
2011-01-01	508
2012-01-01	501
2013-01-01	503
2014-01-01	508
2015-01-01	507
2016-01-01	485
2017-01-01	487