Year	Number
2004-01-01	240
2005-01-01	257
2006-01-01	252
2007-01-01	260
2008-01-01	254
2009-01-01	199
2010-01-01	205
2011-01-01	192
2012-01-01	188
2013-01-01	196
2014-01-01	205
2015-01-01	194
2016-01-01	238
2017-01-01	244