*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19731
19740
19750
19761
19770
19783
19790
19800
19810
19820
19830
19840
19851
19860
19871
19880
19890
19900
19910
19920
19930
19940
19954
199617
19970
19980
19990
20000
20010
20020
20030
20040
20050
20062
20070
20081
20091
20100
20112
20124
20130
20141
20150
20162
20170
20180
20190
20200
20210
20220
20231
20241
Total45