*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001105106
Feb005013687
Mar08860094
Apr1259200118
May22611600144
Jun518720500397
Jul3169300112
Aug02900092
Sep0011900119
Oct0010000100
Nov00620062
Dec00380237275
Total11264105123781706