*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan17827000205
Feb3830650106
Mar00087087
Apr00068674
May003278111392
Jun0022443197662
Jul0013180109302
Aug0051363144
Sep0001330133
Oct00065065
Nov00075075
Dec83230640899
Total1048334315944263144