*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan84205091
Feb251055081
Mar00119213206
Apr00141870489
May001386810611942
Jun0065118860327285
Jul005652110161593
Aug0012386245
Sep0011235129
Oct00078078
Nov00018018
Dec40100220423
Total51031383726820312580