*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb002035
Mar03180021
Apr5262861001128
May132731585003329
Jun442930605003579
Jul32133950001115
Aug6353700546
Sep0220300205
Oct00420042
Nov2080010
Dec00101718
Total1026064381203010008