Year	Number
2004-01-01	6645
2005-01-01	40530
2006-01-01	51092
2007-01-01	78085
2008-01-01	132872
2009-01-01	143507
2010-01-01	124821
2011-01-01	176362
2012-01-01	194784
2013-01-01	231644
2014-01-01	270382