Year	Number
2007-01-01	76.00248661
2008-01-01	80.50507632
2009-01-01	81.87226824
2010-01-01	81.08659244
2011-01-01	81.00193381
2012-01-01	79.32742491
2013-01-01	80.74482325
2014-01-01	82.16557569