*Excludes Observations that spanned multiple years

Pre 197010
19700
19714
19720
19731
19740
19752
19760
19774
19783
19790
19800
19810
19822
19831
19843
198580
198664
1987206
1988408
198959
199032
1991223
1992184
1993430
1994208
1995288
1996286
1997210
199839
1999112
200051
2001157
200267
200371
200497
200591
200649
200774
200864
200978
201094
201180
2012109
201390
201486
201587
201686
201781
201851
2019135
2020100
202180
202299
202377
202491
Total5004