*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005514519
Feb1421442179368
Mar015923600395
Apr026627100537
May111371183001565
Jun161879359002254
Jul12675482001169
Aug59838800491
Sep29237200466
Oct07323900312
Nov05319100244
Dec012810530623
Total4747202946712238943