*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001620482064
Feb0295539071867
Mar4133421003438
Apr8313843003882
May856565563007213
Jun1249093691009908
Jul328112574003417
Aug352105002113
Sep192268002278
Oct011905001906
Nov0090300903
Dec00444219782424
Total257165301967221493341413