*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001399400
Feb001120126238
Mar7560800620
Apr1212060002082
May10851529001624
Jun18921014001124
Jul31925200292
Aug7748200496
Sep0158600587
Oct0062100621
Nov0034100341
Dec001011605707
Total742207706211309132