*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000217217
Feb1086073160
Mar6150500512
Apr081021001029
May31071209001319
Jun2371916001010
Jul15530600326
Aug6121000217
Sep0024100241
Oct0030800308
Nov0021700217
Dec00520228280
Total54193507105185836