*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000033
Feb00220325
Mar7541263001324
Apr171092012002138
May763103387003566
Jun1676077440006684
Jul1158901791002796
Aug261178400821
Sep2283100835
Oct0034500345
Nov00150015
Dec000099
Total41010246789001518561