*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000108108
Feb001702239
Mar01480049
Apr1123400236
May41650800528
Jun256450600595
Jul331134000384
Aug14845300475
Sep1047900480
Oct0051100511
Nov0017100171
Dec00460197243
Total78101331303273819