*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002418051829
Feb0060878071422
Mar071305001312
Apr3231475001501
May227826217008065
Jun43178964320018371
Jul2355572861008441
Aug13262617002656
Sep372123002133
Oct021217001219
Nov0079800798
Dec10370217742147
Total108313441402333438649894