Year	Number
2004-01-01	220.5779
2005-01-01	287.3915
2006-01-01	366.7192
2007-01-01	442.7239
2008-01-01	389.8611
2009-01-01	319.9215
2010-01-01	325.4462
2011-01-01	513.7044
2012-01-01	518.2833
2013-01-01	567.2316
2014-01-01	570.3660
2015-01-01	507.1356
2016-01-01	504.2875