*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003156159
Feb01650119185
Mar01022200232
Apr03053200562
May32346146002495
Jun113182141003334
Jul24777929001730
Aug12644700465
Sep0036800368
Oct0016400164
Nov00710071
Dec00320285317
Total5063523117356010082