*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19852
19860
19870
19881
19890
19900
19910
19920
19930
19940
19950
19960
19973
19988
19997
20009
200110
200217
200316
200418
200519
200619
200715
200815
200916
201015
201118
201221
201320
201418
201514
201615
201711
20188
201910
20207
20218
20222
20230
20240
Total342