*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003263266
Feb0083081164
Mar01016200172
Apr11943200452
May31317768002088
Jun281158973002159
Jul7711040000587
Aug471134000398
Sep6438200392
Oct0144000441
Nov0022100221
Dec00760495571
Total1622630427738397911