*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002209211
Feb0059044103
Mar171387001395
Apr8432674002725
May564806766005628
Jun14662922720009158
Jul817142682003477
Aug17191913001949
Sep251287001294
Oct1039700398
Nov0014000140
Dec00781596675
Total3121188614103384927153