Year	Number
2004-01-01	875
2005-01-01	877
2006-01-01	952
2007-01-01	1147
2008-01-01	1274
2009-01-01	1320
2010-01-01	1361
2011-01-01	1207
2012-01-01	1270
2013-01-01	1177
2014-01-01	1067
2015-01-01	1058
2016-01-01	1031