*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004197201
Feb00150064214
Mar171656001664
Apr5191380001404
May37761373001486
Jun431311090001264
Jul31819100230
Aug7222100230
Sep0126800269
Oct0029500295
Nov0018400184
Dec00690382451
Total124244687746437892