Year	Number
2004-01-01	35827
2005-01-01	42300
2006-01-01	41142
2007-01-01	45429
2008-01-01	55776
2009-01-01	46403
2010-01-01	70222
2011-01-01	82620
2012-01-01	53220
2013-01-01	76444