*Excludes Observations that spanned multiple years

Pre 19700
19700
19713
19720
19730
19741
19750
19763
19774
19781
19791
19803
19815
19821
19831
19841
19851
198627
19874
198811
19894
19908
199170
199267
199371
199415
199559
199615
199744
19980
199976
200050
200176
200219
200326
20044
20053
20066
20070
20088
20094
20104
20118
20129
201386
201464
201565
2016135
2017178
2018133
2019145
20200
20210
20220
Total1519