*Excludes Observations that spanned multiple years

Pre 19700
19701
19710
19720
19732
19742
19751
19760
19770
19782
19790
19802
19812
19820
19832
19842
19855
19860
19875
19880
19892
19907
19910
19922
19939
199410
199512
199625
19972
199814
19994
200013
200113
20023
20035
20044
20054
20068
200723
200827
200947
201040
201147
201210
201316
201413
201522
201647
201716
201843
201987
202032
202128
202265
202364
202431
Total821