*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00125760
Feb001301124
Mar1117200174
Apr52932000354
May25222811001058
Jun6811302820004018
Jul36324749001109
Aug81041300431
Sep2425300259
Oct00740074
Nov00330033
Dec00251395421
Total1451720568434638015