*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005319324
Feb00113077190
Mar01049300503
Apr1231742001766
May101222836002968
Jun722152542002829
Jul822051600618
Aug21331600340
Sep1238200385
Oct0052400524
Nov0023800238
Dec00900399489
Total1873959792579511174