*Excludes Observations that spanned multiple years

Pre 197050
19704
19713
19722
19732
19741
19754
19761
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19891
19900
19910
19920
19930
19940
19950
19960
19970
19980
19992
20000
20010
20020
20030
20040
20050
20069
20070
20080
20090
20106
20110
20120
20131
20140
20150
20160
20170
20180
20190
20200
20211
20220
20230
20240
Total87