*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19841
19850
19860
19870
19881
19890
19900
19910
19920
19930
19940
19951
19961
19970
19980
19990
20000
20019
20022
20030
20040
20050
20061
20070
20080
20090
20101
20119
20120
20131
20141
20151
20160
20170
20180
20194
20202
202117
202216
202332
202411
Total112