*Excludes Observations that spanned multiple years

Pre 197025
19700
19711
19720
19730
19742
19752
19760
19771
19780
19791
19800
19810
19820
19830
19840
19850
19863
19871
198844
19890
19903
19914
19924
19932
199414
199526
199610
19970
19982
19999
20001
20010
20020
20033
20045
20051
20064
20074
20081
20092
20107
20117
201255
20133
20143
20152
20162
20175
20182
20192
20206
20217
20225
20239
20243
Total293