Year	Number
2004-01-01	76597
2005-01-01	110562
2006-01-01	158679
2007-01-01	214196
2008-01-01	260378
2009-01-01	247001
2010-01-01	237128
2011-01-01	208298
2012-01-01	225250
2013-01-01	49460
2014-01-01	54102
2015-01-01	53342
2016-01-01	47093
2017-01-01	40159