*Excludes Observations that spanned multiple years

Pre 197011
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19931
19944
19950
19960
19970
19980
19990
20000
20011
20020
20030
20040
20050
20063
20074
20080
20090
20100
20110
20120
20131
20140
20150
20161
20170
20180
20190
20201
20211
20221
202312
20240
Total42