*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000124124
Feb103304074
Mar5054400549
Apr291121001132
May6491058001113
Jun584869900805
Jul23225800283
Aug7124300251
Sep0116800169
Oct0029600296
Nov0017500175
Dec00410145186
Total102110463603095157