*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000512121217
Feb003773426806
Mar110176600868
Apr44756800619
May141060985002059
Jun2229791385004386
Jul817171856003581
Aug1181992002011
Sep021517001519
Oct001081001081
Nov0064600646
Dec00271210741347
Total5059241144410271220140