Year	Number
2007-01-01	5615.5378
2008-01-01	7538.9543
2009-01-01	6812.3081
2010-01-01	7314.5952
2011-01-01	7475.5948
2012-01-01	7403.2308
2013-01-01	7222.7510
2014-01-01	6855.5868
2015-01-01	6236.3379
2016-01-01	6099.4355
2017-01-01	4801.6346