*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000000
Feb000000
Mar018009
Apr110131700419
May197093517007629
Jun107202258350021167
Jul7129612402005434
Aug4211258001283
Sep3480800815
Oct00400040
Nov002002
Dec001034
Total2053040661880336802