*Excludes Observations that spanned multiple years

Pre 19708
19700
19711
19720
19731
19740
19751
19760
19770
19781
19790
19800
19812
19820
19831
19840
19851
19861
19871
19880
19890
19900
19910
19920
19930
19940
19950
19961
19970
19980
19990
20000
20013
20020
20030
20040
20050
20060
20070
20080
20091
20100
201115
20123
20131
20147
20150
20161
20170
20180
20192
20201
20212
20222
20232
20241
Total60