*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19950
19960
19970
19980
19990
20000
20010
20020
20030
20040
20051
20062
20071
20083
20097
20102
20116
20129
20136
20145
20158
20166
20175
20189
20195
20209
202120
202221
202324
202423
Total172