*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19731
19743
19750
19760
19770
19780
19794
19801
19812
19822
19830
19841
19851
19860
19871
19881
19891
19900
19911
19922
19931
19943
19956
19961
19971
19980
19991
20001
20013
20023
20030
20041
20050
20061
20070
20086
20090
20107
20113
20121
20134
20144
20150
20161
20175
20183
201917
20208
202121
20226
Total130