*Excludes Observations that spanned multiple years

Pre 197011
19700
19710
19720
19730
19742
19751
19760
19770
19780
19790
19801
19810
19820
19830
19840
19850
19860
19872
19883
19894
19908
19914
19921
19930
19942
19950
19963
19970
19982
19996
200017
200124
20024
200336
200444
200590
2006104
200731
20082
200917
201064
201145
201238
201332
201415
201535
201639
201714
201818
201918
202023
202116
20223
20231
20249
Total789