Year	Number
2004-01-01	7889
2005-01-01	7446
2006-01-01	8114
2007-01-01	8546
2008-01-01	8654
2009-01-01	8506
2010-01-01	7919
2011-01-01	7799
2012-01-01	7569
2013-01-01	7383
2014-01-01	7515
2015-01-01	7004
2016-01-01	6750