*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19731
19741
19750
19760
19770
19780
19791
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19941
19951
19960
19971
19980
19990
20000
200112
20020
20032
20040
20051
20061
20070
20080
20090
20100
20113
20121
20131
20140
20150
20167
201716
20184
201921
202035
202153
202273
202371
202439
Total346