*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19810
19820
19830
19842
19851
19860
19870
19880
19891
19900
19912
19920
19931
19942
19951
19966
19970
19980
19990
20000
20010
20020
200313
20043
20050
20061
20070
20082
20091
20100
20110
20121
20130
20140
20150
20160
20170
20180
20190
20200
20210
20220
20230
20240
Total38