*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19800
19810
19820
19830
19841
19851
19860
19870
19884
19891
19903
19914
19925
19931
19946
19951
19960
19973
19983
19994
20003
20012
20025
20035
20045
20059
200610
20077
200810
20093
20102
20110
20121
20130
20140
20150
20160
20170
20180
20190
20200
20210
20220
20230
20240
Total100