*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001120121
Feb002802856
Mar0320700210
Apr64479300843
May21891023001133
Jun765459200722
Jul49729400350
Aug15136700383
Sep2234100345
Oct0117000171
Nov00610061
Dec00350200235
Total169201391113484630