*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19760
19771
19780
19790
19800
19810
19821
19831
19840
19851
19860
19870
19886
19894
19905
199110
19925
19937
19944
199511
199620
19973
19986
19993
20000
20012
20020
200320
200434
200520
200624
200736
200832
200932
201032
201123
201230
201337
201419
201514
201624
201718
201827
201913
202014
20218
20227
20233
20240
Total558