Year	Number
2004-01-01	730.2541
2005-01-01	955.7596
2006-01-01	1084.8498
2007-01-01	1105.2393
2008-01-01	1159.9453
2009-01-01	1065.9094
2010-01-01	938.6374
2011-01-01	884.9265
2012-01-01	783.6036
2013-01-01	714.4181
2014-01-01	684.6347
2015-01-01	693.7375
2016-01-01	679.0633
2017-01-01	648.6659