*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00002323
Feb002057
Mar00130013
Apr17740082
May7530499001036
Jun4042921035005367
Jul29629350001008
Aug3618300192
Sep2813800148
Oct00240024
Nov000000
Dec0080190198
Total825472232602188098