*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001010021012
Feb004480395843
Mar0171757001774
Apr2482391002441
May25642086002175
Jun1171161645001878
Jul119191200001338
Aug32111171001214
Sep641283001293
Oct001226001226
Nov1095200953
Dec0029219991292
Total3022791445111239617439