*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0008668676
Feb001712196369
Mar72335200382
Apr61235400372
May3854417300755
Jun109893144001146
Jul127154851001132
Aug343872300795
Sep10458600600
Oct0034200342
Nov0022900229
Dec0015729661125
Total331166840821218307923