Year	Number
2004-01-01	71
2005-01-01	116
2006-01-01	180
2007-01-01	338
2008-01-01	538
2009-01-01	702
2010-01-01	789
2011-01-01	1009
2012-01-01	1170
2013-01-01	1255
2014-01-01	1387
2015-01-01	1416
2016-01-01	1432