*Excludes Observations that spanned multiple years

Pre 197036
19700
19711
19720
19730
19740
19750
19760
19771
19780
19790
19800
19813
19820
19830
19841
19851
19863
19873
19881
19891
19908
19913
19921
19933
19942
19952
19962
199710
19988
19993
200010
200118
200215
200342
200464
200570
200680
200735
200813
200917
201046
201145
201238
20133
20144
201558
201655
20179
20186
20199
202023
202122
202212
20230
20240
Total787