*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0008668676
Feb001712196369
Mar72335300383
Apr61235600374
May3854417800760
Jun109893145001147
Jul127154851001132
Aug343872300795
Sep10458600600
Oct0034200342
Nov0023000230
Dec0015729661125
Total331166840921218307933