*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19952
19962
19972
19980
19990
20009
20015
200223
20037
20045
200525
20067
200719
20084
200911
20103
20111
20123
201320
20145
201532
201620
201730
201811
201923
202024
202145
202235
202312
20242
Total387