*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00224347
Feb00150621
Mar51830089
Apr3227000275
May49443000528
Jun288750600621
Jul451215100208
Aug14212200138
Sep1014600147
Oct0016600166
Nov00840084
Dec00190233252
Total100198199422822576