*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00018504522
Feb012041218424
Mar03649100527
Apr414160100746
May76112376006495
Jun16176599090018584
Jul14631244180010744
Aug9201870001899
Sep131130001134
Oct0051300513
Nov0022900229
Dec00710705776
Total51302841081219142742593