*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00013123136
Feb013724383
Mar08790087
Apr07116800239
May01261328001589
Jun184249392004659
Jul171366261001644
Aug51519900219
Sep1812300132
Oct01720073
Nov00400040
Dec00455645695
Total4169801744208119596