*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19781
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19950
19960
19970
19980
19990
20000
20010
20021
20030
20041
20050
20060
20071
20081
20093
20107
20117
201216
201347
201415
201533
201638
201739
201818
201911
202010
202111
202214
20230
20240
Total274