*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19871
19880
19890
19903
19912
19921
19934
19940
19950
19961
19975
19980
19990
20001
20010
20029
20031
20040
20050
20060
20070
20080
20090
20100
20112
20120
20131
20141
20150
20161
201717
20180
20194
20201
20211
20220
20231
20240
Total59