*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0009872881
Feb032755310593
Mar0552700532
Apr11448800503
May171148532001697
Jun8820181501003607
Jul564701731002257
Aug7965700673
Sep1757600584
Oct0037600376
Nov0037000370
Dec00180211571339
Total1703674721316233913412