4 instances from 4 years

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
14
Oct
Nov
Dec

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

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
14
Dec

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