*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19751
19760
19770
19780
19791
19800
19810
19820
19831
19840
19850
19860
19870
19881
19893
19900
19911
19920
19930
19940
19951
19960
19970
19980
19990
20000
20012
20020
20031
20041
20054
20062
20070
20082
20091
20102
20111
20123
20131
20142
20152
20162
20172
20181
20192
20200
20212
20220
20230
20240
Total42