*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000033
Feb00220325
Mar8541429001491
Apr171092415002541
May863653402004141
Jun1946774456007424
Jul13011251919003174
Aug33121029001074
Sep321115001120
Oct0045200452
Nov00160016
Dec00101011
Total47111729925601621472