Year	Number
2004-01-01	9875
2005-01-01	11679
2006-01-01	10388
2007-01-01	9587
2008-01-01	9355
2009-01-01	7972
2010-01-01	8383
2011-01-01	11172
2012-01-01	13433
2013-01-01	12206
2014-01-01	10768
2015-01-01	11518
2016-01-01	12810