*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002504506
Feb1241522194373
Mar09427700371
Apr018831300501
May81302183001493
Jun151956356002327
Jul10763451001224
Aug67547600557
Sep06751800585
Oct05231800370
Nov03024500275
Dec091060605720
Total4045603395413039302