Year	Number
2004-01-01	148
2005-01-01	150
2006-01-01	144
2007-01-01	149
2008-01-01	151
2009-01-01	153
2010-01-01	144
2011-01-01	144
2012-01-01	144
2013-01-01	139
2014-01-01	131
2015-01-01	129
2016-01-01	31