*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197003140118
1970004004
1971080019
1972000022
1973000000
1974001012
1975020002
1976001001
1977102014
1978013015
1979045009
1980115007
1981014016
1982003014
1983015006
1984032027
1985023005
19860460010
198703120116
19880380011
1989011100324
199002090130
1991412110128
1992126111140
1993055160172
199411312301156
199521182600146
199611221902144
199711482501175
199821552100178
199911181600135
200011562402183
200121412503171
200202594202303
200303474002389
200413633500399
200532343801276
200603635900422
200703555300408
200813045904368
200911949401290
2010235311102468
2011115812503287
2012338912204518
2013552512502657
20145909152081074
2015345717806644
2016337318604566
20171052124602779
2018947625900744
20191160925004874
2020357639802979
20213660418041085
20225753312011071
202300150015
2024000000
Total8710427363118014226