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*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19731
19740
19751
19761
19770
19781
19791
19800
19812
19820
19831
19843
19851
19861
19870
19882
19890
19900
19911
19920
19935
19940
19950
19962
19970
19981
19993
200016
20012
20021
20034
20041
20050
20061
20076
200811
20097
201037
201143
201211
201322
20142
20152
201615
201716
201833
201911
202012
202126
202236
20230
20240
Total344