*Excludes Observations that spanned multiple years

Pre 197063
19700
19710
19721
19731
19741
19750
19760
19773
19782
19791
19800
19812
19823
19830
19841
19850
19860
19870
19880
19895
19902
19911
19921
19930
19941
19951
19963
19971
19980
19990
20001
20010
20021
20033
20042
20053
200610
20070
20084
200913
20107
201116
201216
201313
20143
201510
201610
201717
201815
201929
20202
20218
20229
20231
20242
Total288