*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00724159190
Feb0177461143
Mar0511000115
Apr311770091
May134162233004408
Jun15107696890011473
Jul164226459004701
Aug72226200291
Sep2620000208
Oct02920094
Nov00610061
Dec10443665713
Total571920423113188522488