*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000270027
1970203005
1971006006
1972002002
1973004004
1974003003
1975006006
1976004004
1977004004
1978001001
1979002002
1980006006
1981202004
1982004004
1983001001
1984002002
1985016007
1986115007
1987215008
1988315009
1989005005
1990016007
1991116008
1992017008
1993103004
199430160019
199510140015
199610170018
19972180011
199821110014
199910130014
200040130017
200121150018
200200210021
200312230026
200401170018
200510260027
200600110011
200700300030
200800180018
200942250031
201050230028
201130250028
201221410044
201330670070
201420700072
201500750075
2016409800102
201700860086
20180419200196
20191213900142
20201119500197
20212029800300
20220019700197
2023005005
2024004004
Total57231918001998