*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00002121
Feb004026
Mar00630063
Apr5186700873
May2471813001844
Jun5532261002319
Jul1821506001526
Aug6085700863
Sep1047100472
Oct0014700147
Nov00450045
Dec001004050
Total1091380440638229