Year	Number
2004-01-01	33.0674
2005-01-01	51.1381
2006-01-01	97.8784
2007-01-01	174.6562
2008-01-01	232.4403
2009-01-01	270.5074
2010-01-01	332.6282
2011-01-01	456.3631
2012-01-01	485.9396
2013-01-01	627.1325
2014-01-01	716.4325
2015-01-01	684.5319
2016-01-01	723.8907