Year	Number
2004-01-01	17906.00
2005-01-01	20282.00
2006-01-01	19346.00
2007-01-01	36872.00
2008-01-01	39851.00
2009-01-01	42306.00
2010-01-01	43053.00
2011-01-01	44715.00
2012-01-01	44031.00
2013-01-01	48532.00
2014-01-01	49210.00
2015-01-01	29347.00
2016-01-01	27308.00
2017-01-01	33601.96