Year	Number
2004-01-01	105
2005-01-01	111
2006-01-01	140
2007-01-01	135
2008-01-01	125
2009-01-01	177
2010-01-01	204
2011-01-01	264
2012-01-01	330
2013-01-01	1447
2014-01-01	1254
2015-01-01	760
2016-01-01	715
2017-01-01	612