Year	Number
2004-01-01	25046
2005-01-01	26897
2006-01-01	33049
2007-01-01	42626
2008-01-01	57573
2009-01-01	55147
2010-01-01	57051
2011-01-01	67641
2012-01-01	85336
2013-01-01	100367
2014-01-01	99131
2015-01-01	14027
2016-01-01	20572
2017-01-01	17817