Year	Month	Nb_of_distinct_IPs	Nb_of_downloads
2011	Jan	21	24
2011	Feb	21	29
2011	Mar	22	32
2011	Apr	29	40
2011	May	22	25
2011	Jun	28	34
2011	Jul	35	37
2011	Aug	32	40
2011	Sep	18	22
2011	Oct	24	54
2011	Nov	33	45
2011	Dec	28	40
2011	all	271	422