*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000055
1970000000
1971001034
1972000011
1973000022
1974002024
1975000033
1976000044
1977001034
1978000022
19790080412
1980001023
1981002057
1982002068
1983002002
19840050510
1985002035
19860080614
198700120416
198800100818
19890070613
199000350540
199100380341
199200480452
199300520961
1994004801361
199500510556
199600460147
199700570562
199800350843
199900330942
2000003301144
200100360743
200200510556
200300340438
200400410647
200500200727
200600270532
200700220628
200800351440
200900640872
201000510657
201100730780
2012008111193
20130011616123
201400102018120
201500139016155
201600178024202
20170022309232
201800302011313
201900227115243
202000320019339
202100263125289
202200176012188
2023004004
2024001001
Total00312553783508