*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000127688
Feb001401529
Mar00270027
Apr01420043
May046235300815
Jun21787596002385
Jul560134100947
Aug81731100336
Sep6317300182
Oct10420043
Nov00300030
Dec00390389428
Total2228711968124805353