*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19792
19800
19812
19820
19830
19841
19850
19861
19870
19881
19891
19900
19910
19921
19930
19940
19951
19960
19970
19980
19991
20001
20010
20020
20031
20040
20051
20060
20070
20080
20090
20100
20110
20120
20131
20140
20150
20160
20173
20184
20191
20203
20212
20221
20230
20240
Total29