Year	Number
2004-01-01	112.9643
2005-01-01	134.7284
2006-01-01	156.2403
2007-01-01	193.2585
2008-01-01	266.3440
2009-01-01	326.5494
2010-01-01	444.1436
2011-01-01	509.9371
2012-01-01	581.2418
2013-01-01	660.2294
2014-01-01	832.9271
2015-01-01	925.9149