*Excludes Observations that spanned multiple years

Pre 19701
19700
19711
19720
19730
19741
19750
19760
19770
19780
19791
19800
19810
19820
19830
19840
19851
19860
19870
198814
19890
19901
19910
19921
19931
19941
19951
19962
19970
19980
19994
20000
20013
20020
20032
20042
20050
20064
20074
200811
20092
201022
201127
20124
20132
20146
20150
20167
20173
20183
201912
20202
202118
20228
20230
20240
Total172