*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001212
Feb003003
Mar6011300119
Apr31148300497
May1813264000790
Jun4512053400699
Jul2869200126
Aug6217900187
Sep0114000141
Oct0011200112
Nov00430043
Dec00818089
Total10627223471922818