Year	Number
2005-01-01	338
2006-01-01	356
2007-01-01	401
2008-01-01	418
2009-01-01	397
2010-01-01	409
2011-01-01	407
2012-01-01	524
2013-01-01	505
2014-01-01	531
2015-01-01	546
2016-01-01	582
2017-01-01	550