*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001399400
Feb001120126238
Mar7560700619
Apr1212060002082
May10851529001624
Jun18921013001123
Jul31925200292
Aug7748100495
Sep0158500586
Oct0062100621
Nov0034000340
Dec001011605707
Total742207701211309127