*Excludes Observations that spanned multiple years

Pre 19704
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19853
19860
19870
19880
19891
19900
19911
19921
19930
19941
199511
19963
19970
19980
19990
20000
20010
20020
20031
20045
20051
20060
20073
20080
20095
20102
20115
20120
20133
20144
20151
20161
20170
20181
20190
20201
20210
20221
20230
20240
Total59