*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0012218771900
Feb58717127501492
Mar94551876002025
Apr3381151527001980
May320911655002066
Jun3441541945002443
Jul301852124002510
Aug31211275001327
Sep151241001247
Oct301101001104
Nov1056600567
Dec00466214061874
Total14385341449436403320535