Year and month

Joe Stringer <joestringer@nicira.com>

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2013	0	0	0	0	0	0	0	0	0	2	6	13
2014	6	23	8	10	18	15	8	6	6	6	5	14
2015	5	2	2	2	13	2	12	8	14	4	1	0