*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000238238
Feb0080081161
Mar211185001188
Apr261498001506
May1582095002118
Jun80363143003259
Jul1461601001621
Aug311075001079
Sep2093500937
Oct0088600886
Nov0048400484
Dec00910277368
Total1185813073059613845