*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan14515010161
Feb49101020152
Mar0012113215
Apr00332215340
May0025514424963
Jun004868228173547
Jul0016258394668
Aug0012054210
Sep0002298237
Oct0001651166
Nov00071071
Dec74220660810
Total9361894282636667540