*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
19882
19890
19900
199138
19923
19930
19940
19953
19960
19970
19980
19990
20000
20010
20020
20032
20043
20059
20066
20071
20084
20092
20107
20111
20120
20130
20142
20151
20168
20170
20181
20198
20201
20211
20220
20230
20240
Total103