*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001313
Feb013037
Mar00110011
Apr61133600353
May13720747200816
Jun665629100413
Jul422252632001306
Aug472718300257
Sep20211300135
Oct3012000123
Nov00500050
Dec001105364
Total70155622220693548