*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001313
Feb013037
Mar00110011
Apr61133700354
May13720947200818
Jun665729100414
Jul422252632001306
Aug472718300257
Sep20211300135
Oct3012000123
Nov00500050
Dec001105364
Total70155922230693552