*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19872
19889
19890
19900
19910
19924
19931
19941
19951
19963
19971
19981
19990
20000
20010
20020
20030
20042
20051
20060
20075
20083
20090
20101
20111
20127
20132
20141
20150
20160
20171
20181
20194
20201
20210
20222
20232
20241
Total59