Year	Number
2005-01-01	16
2006-01-01	16
2007-01-01	12
2008-01-01	10
2009-01-01	132
2010-01-01	132
2011-01-01	76
2012-01-01	69
2013-01-01	62
2014-01-01	96
2015-01-01	106
2016-01-01	210
2017-01-01	156