*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003623626
Feb001991225425
Mar01335100364
Apr01115200163
May04694400513
Jun12148048001540
Jul9542460001011
Aug5943500449
Sep0038800388
Oct0046600466
Nov0046400464
Dec0021718771095
Total2625243224517257504