*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0009186195
Feb0339266110
Mar0974200139
Apr348240075
May10104933001092
Jun11263358002702
Jul41472266001742
Aug11429000305
Sep0221100213
Oct00930093
Nov00630063
Dec00612624687
Total2953181180138767416