*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000910591068
Feb023495395751
Mar0564700652
Apr11462100636
May171468539002024
Jun10325981508004209
Jul646961857002617
Aug91096000979
Sep1792900937
Oct0059300593
Nov0055900559
Dec00252213711625
Total1954800881416282516650