*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00011527032818
Feb2112332911642429
Mar4201934001958
Apr11381681001730
May225922145006089
Jun81123182520012651
Jul6339152650006628
Aug21262391002438
Sep172244002252
Oct901989001998
Nov201900001902
Dec009016419362901
Total2162224717320208580345794