*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001313
Feb013037
Mar00110011
Apr61133800355
May13720947200818
Jun665729100414
Jul422252633001307
Aug472818400259
Sep20211300135
Oct3012100124
Nov00500050
Dec001105364
Total70156022270693557