Year	Number
2004-01-01	225
2005-01-01	310
2006-01-01	374
2007-01-01	456
2008-01-01	581
2009-01-01	692
2010-01-01	766
2011-01-01	851
2012-01-01	924
2013-01-01	1005
2014-01-01	1082
2015-01-01	973
2016-01-01	1046
2017-01-01	1099