Year	Number
2004-01-01	92
2005-01-01	124
2006-01-01	131
2007-01-01	149
2008-01-01	177
2009-01-01	182
2010-01-01	179
2011-01-01	181
2012-01-01	169
2013-01-01	149
2014-01-01	149
2015-01-01	149
2016-01-01	150