*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19731
19740
19750
19760
19770
19780
19790
19800
19811
19820
19830
19840
19851
19860
19870
19880
19890
19901
19910
199213
19930
19941
199513
19960
19970
19980
19991
20000
20010
20020
20030
20042
20051
20063
20071
20080
20090
20106
20113
20121
20131
20141
20152
20168
20170
20182
20190
20200
20211
20220
20230
20240
Total65