Year	Number
2004-01-01	10376
2005-01-01	16154
2006-01-01	24542
2007-01-01	24857
2008-01-01	40865
2009-01-01	45112
2010-01-01	55383
2011-01-01	54058
2012-01-01	67764
2013-01-01	113987
2014-01-01	122276
2015-01-01	102427
2016-01-01	140213
2017-01-01	173231