*Excludes Observations that spanned multiple years

Pre 197012
19700
19710
19720
19730
19740
19750
19760
19772
19783
19790
19800
19810
19823
19830
19840
19850
19860
19870
19880
19892
19900
19911
19920
19930
19942
19951
19962
19976
19980
19991
20000
20010
20020
20033
20040
20050
20060
20072
20080
20090
20100
20112
20122
20134
20140
20150
20163
20170
20181
20190
20200
20215
20220
20230
20240
Total57