*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970005005
1970002002
1971000000
1972000000
1973003003
1974032005
1975031015
1976021014
1977024028
1978021003
1979023016
1980001001
1981003025
1982003036
1983006028
1984002046
19851250210
19861160412
198713100620
19880190515
19891251413
19900540716
199165140328
199213190730
199318160631
199479210643
199568160535
199691190231
199741200530
199829270341
199939250441
200035200432
200141300843
200251270134
200328330245
200435160529
200545330749
200667400861
200787460869
200832700580
2009457701096
20104987012112
2011317301390
201279148016180
2013116201012230
20149717508199
201578210015240
20161314246026299
20172118257026322
20182013290017340
2019311632017375
2020149400018441
2021125424012453
20227732107342
202303140017
202400140115
Total244252382523334656