Year	Number
2004-01-01	850
2005-01-01	928
2006-01-01	966
2007-01-01	1044
2008-01-01	1164
2009-01-01	1146
2010-01-01	1160
2011-01-01	1248
2012-01-01	1263
2013-01-01	1285
2014-01-01	1338
2015-01-01	814
2016-01-01	804
2017-01-01	794