*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19741
19750
19760
19770
19782
19790
19800
19811
19821
19832
19842
19851
19860
19871
19880
19890
19900
19910
19921
19931
19942
19952
19961
19970
19980
199921
200015
20015
20020
20030
20040
20050
20060
20070
20081
20090
20101
20110
20121
20130
20140
20150
20161
20170
20180
20190
20202
20210
20221
Total69