*Excludes Observations that spanned multiple years

Pre 197020
19701
19712
19722
19731
19740
19751
19760
19770
19781
19793
19800
19813
19821
19831
19840
19850
19860
19871
19880
19891
19900
19911
19920
19932
19941
19951
19960
19970
19980
19990
20001
20010
20020
20030
20041
20051
20060
20071
20086
20091
20100
20110
20120
20130
20140
20150
20160
20170
20180
20190
20200
20210
20220
20230
20240
Total54