*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000167167
Feb003803876
Mar00720072
Apr11558500601
May115191510005712
Jun721059510390011706
Jul5111372930004118
Aug5121702001719
Sep281414001424
Oct0020800208
Nov00260026
Dec00320269301
Total142169588556047426130