*Excludes Observations that spanned multiple years

Pre 197018
19700
19710
19720
19731
19740
19751
19760
19771
19781
19790
19800
19810
19820
19830
19840
19850
19860
19871
19880
19890
19900
19910
19921
19930
19940
19950
19960
19970
19980
19990
20000
20010
20020
20030
20040
20051
20062
20071
20084
20093
20102
201120
20124
20130
201411
20156
201610
201717
201831
201940
202024
202151
202242
20234
20244
Total301