*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000910611070
Feb033815395784
Mar0564900654
Apr11462700642
May171468533002018
Jun10125901503004194
Jul646881874002626
Aug91097200991
Sep1794100949
Oct0059800598
Nov0056200562
Dec00252213711625
Total1934785889216282716713