Year	Number
2004-01-01	229008
2005-01-01	245221
2006-01-01	237082
2007-01-01	224048
2008-01-01	219721
2009-01-01	224074
2010-01-01	226805
2011-01-01	222671
2012-01-01	225837
2013-01-01	303533
2014-01-01	251873
2015-01-01	269266
2016-01-01	294521
2017-01-01	306039