*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19741
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19881
19891
19900
19912
19920
19930
19941
19950
19960
19970
19980
19990
20000
20011
20020
20032
20040
20050
20060
20071
20081
20090
20100
20111
20121
20134
20143
20152
20161
20170
20181
20190
20200
20210
20220
20231
20240
Total25