Year	Number
2004-01-01	25746
2005-01-01	25930
2006-01-01	25864
2007-01-01	24826
2008-01-01	25260
2009-01-01	25915
2010-01-01	25779
2011-01-01	25990
2012-01-01	16198
2013-01-01	15964