Year	Number
2004-01-01	23603
2005-01-01	38342
2006-01-01	33015
2007-01-01	31433
2008-01-01	58626
2009-01-01	53195
2010-01-01	46673
2011-01-01	36429
2012-01-01	34275
2013-01-01	35436
2014-01-01	41265
2015-01-01	46362
2016-01-01	65942