*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197023100015
1970001001
1971000000
1972001001
1973003003
1974000000
19750840012
1976014005
1977003003
1978103004
1979036009
1980054009
1981103004
1982013004
1983005005
1984001001
1985014005
1986015006
19870290011
19880840012
19891390013
199081790034
1991111210033
199213100014
1993216100028
1994150140065
1995532120049
1996835160059
199731422600171
19981842200107
199921033600141
20003745100128
200131501800171
200201435300196
200322474800297
200432054900257
2005821321600437
200661854300234
200711524000193
200851546300222
20097728800167
2010920914900367
2011012713900266
20121036717100548
201382289400330
201473079400408
20151169023100932
20161237821500605
20171061031800938
201814792273001079
20191257623900827
2020855622500789
20211656421500795
20221858827300879
20231873217900929
20242470020400928
202521031700122
2026000000
Total254965139630013868