Year	Number
2008-01-01	48051
2009-01-01	58110
2010-01-01	57171
2011-01-01	57349
2012-01-01	67646
2013-01-01	64544
2014-01-01	54217
2015-01-01	55366
2016-01-01	59379
2017-01-01	64110