Year	Number
2004-01-01	93
2005-01-01	112
2006-01-01	132
2007-01-01	170
2008-01-01	143
2009-01-01	131
2010-01-01	123
2011-01-01	136
2012-01-01	141
2013-01-01	151
2014-01-01	133
2015-01-01	89
2016-01-01	85