*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19731
19740
19750
19767
19777
19780
19790
19802
198112
19820
19831
19841
19850
19860
19870
19880
19890
19901
19910
199211
19938
19941
19951
19960
199724
19980
19992
20000
200138
20026
200333
20047
200513
20064
20073
20081
200911
20104
20116
201212
201315
201418
201527
201627
201726
201839
201917
202014
202112
202215
202328
20241
Total456