*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003682685
Feb032460242491
Mar0863600644
Apr1401803001844
May5511343001399
Jun463166400741
Jul38326300304
Aug6022700233
Sep2027800280
Oct0064800648
Nov0062000620
Dec001840759943
Total981366912316838832