*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003665396575
Feb0421672222954488
Mar9244138004171
Apr16444075004135
May493636834007246
Jun106239777830010286
Jul424543919004415
Aug392813002825
Sep093682003691
Oct013798003799
Nov002922002922
Dec011598646756280
Total225330643729641350960833