*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970004048
1970000000
1971001012
1972000000
1973000011
1974001001
1975002002
1976000000
1977002002
1978004004
1979002013
1980001001
1981002035
1982003025
1983002024
1984002002
1985004015
1986004015
19870070411
1988007018
1989006017
199000100111
199100250025
199200250025
199300270027
199400400242
199500430144
199600290029
199700390443
199800230124
199900230427
200000210021
200100340236
200200250126
200300150116
200400240024
200500160016
200600180018
200700160622
200800230124
200900440044
201000420042
201100330437
201200580462
20130013501136
201400950095
20150012305128
201600183010193
20170027009279
20180034304347
201900230010240
202000474015489
202100345017362
20220027402276
2023005005
2024008008
Total00319201273319