*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004229233
Feb0062061123
Mar01312500138
Apr16834700416
May41165734001903
Jun26976948001950
Jul545734300454
Aug311123500277
Sep1324000244
Oct0127300274
Nov0016300163
Dec00570454511
Total1172294352747446686