*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00014789803
Feb15272691262574
Mar12812255300803
Apr17224151100924
May18954865001108
Jun11297915001124
Jul563658200674
Aug131548000508
Sep61356300582
Oct2238300387
Nov1132000322
Dec0119629141113
Total69460956371719658922