*Excludes Observations that spanned multiple years

Pre 197027
19700
19711
19721
19731
19740
19750
19763
19770
19781
19790
19800
19810
19822
19830
19841
19851
19863
19870
19882
19891
19900
19910
19920
19930
19941
199530
19961
19973
19980
19993
20002
20010
20022
20030
20040
20050
20060
20070
20080
20090
20100
20111
20120
20132
20141
20151
20160
20172
20183
20192
20201
20213
20223
20232
20242
Total109