Year	Number
2004-01-01	107
2005-01-01	127
2006-01-01	136
2007-01-01	166
2008-01-01	180
2009-01-01	189
2010-01-01	192
2011-01-01	194
2012-01-01	207
2013-01-01	207
2014-01-01	211
2015-01-01	202
2016-01-01	182
2017-01-01	157