*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002209211
Feb0059044103
Mar171387001395
Apr8432682002733
May564811784005651
Jun14762922731009170
Jul817142685003480
Aug17191919001955
Sep251293001300
Oct1040500406
Nov0014000140
Dec00781596675
Total3131189114163384927219