History of the number of London Underground stations visited by Bliss

Total stations visited over time
Date	Stations
2009-08-01	41
2009-10-01	43
2009-12-01	44
2010-02-01	46
2010-04-01	47
2010-06-01	49
2010-08-01	51
2010-10-01	52
2010-11-01	53
2010-12-01	55
2011-02-01	56
2011-04-01	59
2011-05-01	61
2011-07-01	63
2011-11-01	64
2012-01-01	66
2012-05-01	67
2012-06-01	70
2012-07-01	71
2012-09-01	72
2012-12-01	73
2013-07-01	75
2014-06-25	77
2014-07-17	78
2014-08-18	79
2014-10-27	80
2014-11-28	81
2014-12-21	83
2016-09-30	84

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Data in a .csv file