*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000000
Feb000011
Mar002002
Apr1324900253
May204070510004600
Jun1216092667006880
Jul935902642003325
Aug4492366002419
Sep1111067001079
Oct00160016
Nov000000
Dec001001
Total2901076575200118576