*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001120121
Feb002802856
Mar0320700210
Apr64479200842
May21891022001132
Jun765459000720
Jul49729400350
Aug15136700383
Sep2234100345
Oct0116600167
Nov00610061
Dec00340200234
Total169201390213484621