*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000022
Feb011013
Mar104590073
Apr280891639002008
May405902884003379
Jun4321512712003295
Jul619492630003298
Aug154351939002128
Sep29151007001051
Oct3011900122
Nov00120012
Dec001045
Total1932434130030715376