Year	Number
2004-01-01	2412
2005-01-01	2225
2006-01-01	2120
2007-01-01	2125
2008-01-01	2140
2009-01-01	2167
2010-01-01	2179
2011-01-01	2302
2012-01-01	2333
2013-01-01	2344
2014-01-01	2359
2015-01-01	2381
2016-01-01	2657