*Excludes Observations that spanned multiple years

Pre 19700
19701
19710
19720
19731
19740
19751
19760
19770
19780
19790
19800
19810
19820
19830
19840
19851
19860
19871
19880
198911
19908
19912
19920
19930
19940
19951
19960
19973
19980
19991
20000
20010
20022
20030
20040
20050
20060
20078
20080
20095
20100
20110
20120
20130
20140
20150
20160
20170
20180
20190
20200
20210
20220
20231
20240
Total47