*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19885
19891
19900
19912
19922
19930
19940
19958
19963
19970
19980
19990
20001
20010
20022
20032
20042
20051
20062
20075
20081
20091
20103
20114
20129
20135
20140
20150
20163
20175
20182
20192
20201
20211
20222
20230
20240
Total76