*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002209211
Feb0061044105
Mar171387001395
Apr8432691002742
May564811784005651
Jun14762922731009170
Jul817142686003481
Aug17191919001955
Sep251293001300
Oct1040600407
Nov0014900149
Dec00781596675
Total3131189114185384927241