Year	Number
2004-01-01	909.0973
2005-01-01	975.7056
2006-01-01	1052.1363
2007-01-01	1201.4715
2008-01-01	1394.0700
2009-01-01	1347.3889
2010-01-01	1416.9930
2011-01-01	1476.7360
2012-01-01	1529.3661
2013-01-01	1621.8346
2014-01-01	1558.6141
2015-01-01	1043.2910
2016-01-01	1172.8597
2017-01-01	1146.1728