Year	Number
2004-01-01	1297
2005-01-01	1287
2006-01-01	1312
2007-01-01	1416
2008-01-01	1547
2009-01-01	1608
2010-01-01	1731
2011-01-01	1804
2012-01-01	1897
2013-01-01	1956
2014-01-01	2034
2015-01-01	2172
2016-01-01	2411