*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
19921
19930
19940
19950
19960
19970
19980
19990
20000
20010
20020
20030
20044
20055
20060
20070
20087
20091
201027
201120
201266
201313
20147
20150
20160
20170
20186
20190
20200
2021158
2022203
202366
20240
Total584