*Excludes Observations that spanned multiple years

Pre 197010
19700
19710
19720
19731
19741
19751
19761
19770
19782
19794
19800
19812
19820
19831
19840
19851
19861
19871
19880
19890
19900
19910
19923
19931
19941
19950
19960
19970
19980
19990
20000
20011
20020
20030
20040
20050
20062
20070
20080
20095
20101
20110
20120
20130
20140
20150
20160
20170
20181
20190
20200
20210
20220
20233
20242
Total46