*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19793
19801
19811
19820
19830
19841
19850
19860
19870
19880
19890
19900
19910
19921
19930
19940
19950
19960
19970
19980
19990
20000
20011
20021
20030
20040
20051
20063
20070
20080
20090
201016
20114
20121
201311
201413
20158
201614
20174
201816
201916
202039
202144
202228
20233
20240
Total230