*Excludes Observations that spanned multiple years

Pre 197016
19700
19711
19722
19730
19745
19750
19762
19770
19780
19790
19800
19810
19820
19830
19840
19851
19860
19870
19883
19890
19900
19910
19920
19934
19940
19954
19960
19970
19980
19990
20000
20010
20020
20030
20041
20051
20060
20070
20080
20092
20100
20110
20120
20130
20140
20150
20160
20171
20180
20190
20201
20210
20222
20231
20240
Total47