*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002694696
Feb101641170336
Mar873554600668
Apr181541508001743
May194282580002802
Jun169572966003192
Jul91252009002125
Aug19101398001427
Sep0181400815
Oct0028600286
Nov0019700197
Dec001200761881
Total742210125883162515168