*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00028688
Feb013312964
Mar05600065
Apr012710083
May42128900305
Jun2750229400823
Jul5316657000789
Aug103621900265
Sep0114200143
Oct00870087
Nov00670067
Dec00150132147
Total94935164732472926