Year	Number
2004-01-01	45
2005-01-01	213
2006-01-01	244
2007-01-01	309
2009-01-01	95
2010-01-01	114
2011-01-01	146
2012-01-01	150
2013-01-01	143
2014-01-01	147
2015-01-01	149
2016-01-01	181