Year	Number
2004-01-01	8598
2005-01-01	40825
2006-01-01	65154
2007-01-01	59125
2008-01-01	61292
2009-01-01	42205
2010-01-01	61331
2011-01-01	59387
2012-01-01	45700
2013-01-01	35851
2014-01-01	34435
2015-01-01	32119
2016-01-01	30711
2017-01-01	29227