*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000033
Feb00210324
Mar8541428001490
Apr171092408002534
May863652402004140
Jun1946793457007444
Jul13011481906003184
Aug33121021001066
Sep321103001108
Oct0044600446
Nov00160016
Dec00101011
Total47111770920901621466