*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan13712000149
Feb244030058
Mar00048048
Apr00151658
May0012553104669
Jun004815804302058
Jul00277842781089
Aug00310511119
Sep01088695
Oct00043043
Nov00042042
Dec69920420743
Total860199133668355171