*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000000
Feb000000
Mar018009
Apr110132300425
May197093519007631
Jun107202258360021168
Jul7129612402005434
Aug4211259001284
Sep3480900816
Oct00400040
Nov002002
Dec001034
Total2053040661990336813