*Excludes Observations that spanned multiple years

Pre 197019
19702
19711
19724
19732
19740
19750
19761
19770
19780
19790
19801
19810
19820
19832
19840
19850
19861
19872
19880
19890
19900
19910
19920
19930
19944
19950
19960
19970
19980
19990
20000
20010
20020
20030
20040
20051
20060
20070
20080
20091
20101
20110
20120
20130
20140
20150
20161
20170
20180
20191
20204
20210
20220
20230
20240
Total48