Year	Number
2004-01-01	2330
2005-01-01	2263
2006-01-01	2156
2007-01-01	2049
2008-01-01	1967
2009-01-01	258
2010-01-01	255
2011-01-01	339
2012-01-01	359
2013-01-01	489
2014-01-01	462
2015-01-01	492
2016-01-01	524