*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0076107120
Feb003513470
Mar13570061
Apr2767900112
May75277200174
Jun1636518500413
Jul972621000333
Aug3621900228
Sep1015800159
Oct00810081
Nov00640064
Dec00613440504
Total3671331228105812319