40 instances from 6 years

Jan
Feb
Mar
Apr
May
Jun
5
Jul
Aug
Sep
Oct
Nov
Dec
6

Jan
Feb
Mar
Apr
May
Jun
1
Jul
25
Aug
Sep
Oct
Nov
Dec
1

Jan
Feb
21
Mar
Apr
May
Jun
1
Jul
Aug
Sep
Oct
Nov
Dec
1

Jan
5
18
Feb
4
11
25
Mar
11
23
Apr
10
24
May
4
17
Jun
1
7
15
29
Jul
13
25
Aug
Sep
Oct
Nov
Dec
1

Jan
Feb
Mar
Apr
May
Jun
Jul
1
22
Aug
5
17
Sep
7
19
30
Oct
14
26
Nov
8
Dec
1
9

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