*Excludes Observations that spanned multiple years

Pre 197074
19702
19712
19721
19733
19740
19754
19761
19773
19782
19790
19805
19813
19824
19830
19840
19853
19863
19871
19881
19891
19906
19914
19921
19939
19946
19959
199610
19978
19985
19997
200020
200111
20028
200310
20045
20054
20062
20079
20089
200913
20106
201112
20126
201311
20145
20154
20169
20176
201810
20199
20209
20215
20229
20239
202410
Total389