*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002533535
Feb001151158274
Mar0020100201
Apr0217000172
May31128172001303
Jun456564578007187
Jul4510814285005411
Aug40463863003949
Sep731678001688
Oct0141600417
Nov0021400214
Dec001240711835
Total1408825118163140222186