20 instances from 5 years

Jan
Feb
Mar
Apr
6
May
Jun
Jul
Aug
1
6
Sep
Oct
Nov
Dec
2

Jan
Feb
Mar
Apr
1
May
Jun
Jul
Aug
6
Sep
Oct
11
Nov
Dec

Jan
Feb
Mar
Apr
1
4
May
Jun
Jul
Aug
2
8
Sep
Oct
Nov
Dec
1

Jan
Feb
Mar
Apr
1
May
Jun
Jul
Aug
3
9
Sep
Oct
Nov
Dec
1
5
17

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
28
Nov
Dec
2