Year	Month	Nb_of_distinct_IPs	Nb_of_downloads
2015	Jan	1	1
2015	Feb	1	1
2015	Mar	1	2
2015	Apr	3	4
2015	May	2	4
2015	Jun	3	3
2015	Jul	1	1
2015	Aug	3	4
2015	Sep	2	4
2015	Oct	4	9
2015	Nov	6	11
2015	Dec	5	26
2015	all	31	70