Year	Number
2004-01-01	1551
2005-01-01	1508
2006-01-01	1472
2007-01-01	1444
2008-01-01	1414
2009-01-01	1367
2010-01-01	1321
2011-01-01	1307
2012-01-01	1189
2013-01-01	1140
2014-01-01	1075
2015-01-01	1010
2016-01-01	961