*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00125190216
Feb0057949115
Mar059700102
Apr23224500279
May1021674900975
Jun218483251004120
Jul2317536900567
Aug9210200113
Sep13880092
Oct1110900111
Nov02730075
Dec00695819893
Total67128452103910587658