*Excludes Observations that spanned multiple years

Pre 197053
19700
19711
19721
19730
19744
19751
19760
19772
19785
19790
19803
19813
19821
19834
19844
19854
19862
19871
19882
19899
19904
199114
199216
199323
19949
199513
199610
19979
19983
19995
20005
200116
20022
20031
20042
20053
20060
20076
20087
20095
201012
201120
201210
20135
20147
20155
201616
201713
201811
20194
20200
20210
20220
Total356