*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
19981
19990
20003
20015
20028
200321
20042
200512
20067
20072
20080
20091
20103
20112
20122
20132
20148
20152
20162
20173
20182
20190
20200
20210
20220
20230
20240
Total88