*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003145148
Feb00610101162
Mar03317800211
Apr118744400632
May42103147002254
Jun112816144002971
Jul24631888001543
Aug10433300347
Sep0024300243
Oct0010600106
Nov00530053
Dec00280275303
Total505774262535218973