Year	Number
2004-01-01	192
2005-01-01	181
2006-01-01	179
2007-01-01	164
2008-01-01	150
2009-01-01	146
2010-01-01	139
2011-01-01	128
2012-01-01	103
2013-01-01	103
2014-01-01	96
2015-01-01	91
2016-01-01	89
2017-01-01	90