*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00011320331
Feb00960135231
Mar0315600159
Apr102321400247
May526133600449
Jun14515752000822
Jul18920147600866
Aug504834000438
Sep5226600273
Oct2024500247
Nov0119000191
Dec001175493615
Total4534962956169484869