Year	Number
2004-01-01	1338
2005-01-01	1389
2006-01-01	1382
2007-01-01	1365
2008-01-01	1301
2009-01-01	1092
2010-01-01	741
2011-01-01	452
2012-01-01	242
2013-01-01	177
2014-01-01	133
2015-01-01	96
2016-01-01	89
2017-01-01	88