*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000160160
Feb0059058117
Mar01520500220
Apr015639200548
May245062500699
Jun137883800929
Jul62537100402
Aug1312800132
Sep00870087
Oct00910091
Nov00970097
Dec00651287353
Total44327295815053835