*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001400401
Feb001130126239
Mar7560800620
Apr1212063002085
May10861531001627
Jun18921015001125
Jul31925200292
Aug7748700501
Sep0158900590
Oct0062400624
Nov0034400344
Dec001011610712
Total742217727211369160