*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00210271283
Feb001012110213
Mar0020900209
Apr1011100112
May533243200769
Jun1114751245002731
Jul128651042001919
Aug6859000604
Sep1343700441
Oct0026900269
Nov0016200162
Dec00473350400
Total3626834647157318112