*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002113115
Feb013814585
Mar03810084
Apr05940099
May12419900341
Jun2859131000929
Jul6020663100897
Aug183631900373
Sep1119600198
Oct0015000150
Nov0010700107
Dec00230147170
Total1081084204833053548