*Excludes Observations that spanned multiple years

Pre 19707
19701
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19851
19860
19870
19880
19890
19901
19912
19921
19930
19940
19950
19960
19970
19985
19990
20000
20015
20020
20031
20040
20051
20060
20070
20080
20090
20100
20110
20121
20131
20140
20151
20160
20170
20180
20190
20201
20210
20220
20230
20240
Total29