*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0008135143
Feb002813059
Mar01450046
Apr05840089
May33316300199
Jun93081343001660
Jul164335100410
Aug1511300119
Sep1513400140
Oct00470047
Nov00460046
Dec00412698741
Total304002395118633699