*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00003838
Feb00150621
Mar30820085
Apr19669500720
May4791558001614
Jun119221723001864
Jul3491084001127
Aug121110001113
Sep6181800825
Oct0029000290
Nov00610061
Dec001605874
Total22949745201027832