*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001399400
Feb001120126238
Mar7560800620
Apr1212060002082
May10861530001626
Jun18921014001124
Jul31925200292
Aug7748200496
Sep0158900590
Oct0062400624
Nov0034200342
Dec001011605707
Total742217714211309141