alter table CPI
  add column year_label varchar(255) default null;

update CPI
  set year_label = year
  where year in ('2007', '2006', 
          '2000', '1990', '1980', '1970', '1940');

plot whiskers
  very big hortick, datalabels right
  with
     scale y 0 250 50
select Average, year_label from CPI
  where year < 2007;

alter table CPI
  drop column year_label;