Year	Number
2004-01-01	607.6158
2005-01-01	607.0089
2006-01-01	617.8284
2007-01-01	647.8718
2008-01-01	711.3551
2009-01-01	794.0365
2010-01-01	863.8341
2011-01-01	934.4602
2012-01-01	1022.2365
2013-01-01	1160.7189
2014-01-01	1337.4104
2015-01-01	1541.7906
2016-01-01	1731.2679