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*Excludes Observations that spanned multiple years

Pre 19701
19700
19711
19720
19730
19740
19750
19760
19772
19780
19790
19800
19810
19820
19830
19841
19853
19860
19870
19880
19890
19902
19910
199211
19939
19942
19954
19960
19970
19980
19990
20000
20010
20020
20030
20041
20050
20060
20071
20080
20093
20102
20112
20121
20130
20145
20150
20162
20172
20183
20190
20204
20212
20223
20230
20240
Total67