*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
200851536300221
20097728800167
2010920914900367
2011012713900266
20121036217100543
201382199300320
201472949400395
20151165922900899
20161135721000578
20171057730900896
201814763265001042
20191253923200783
2020850621800732
20211650921200737
20221854526400827
20231867017600864
20242464919500868
202521031700122
2026031004
Total253921439010013368