Year	Number
2004-01-01	1505
2005-01-01	1603
2006-01-01	1723
2007-01-01	1890
2008-01-01	1980
2009-01-01	2218
2010-01-01	2308
2011-01-01	2329
2012-01-01	2344
2013-01-01	2357
2014-01-01	2362
2015-01-01	2295
2016-01-01	2280