Year	Number
2004-01-01	14
2005-01-01	34
2006-01-01	33
2007-01-01	53
2008-01-01	251
2009-01-01	277
2010-01-01	285
2011-01-01	326
2012-01-01	346
2013-01-01	378
2014-01-01	379
2015-01-01	408
2016-01-01	426
2017-01-01	432