using a plpgsql function argument as a table column.

[ss]

I have a table with many years as columns. y1976, y2077, .. , 
y2019,y2020 I want to dynamically return a column from a function.

select * from FUNCTION('y2016') .....

select t1.cola t1.colb, t1.colc, t2.y2016 from ..... Where t2.y2016 != 0;

or if I select year y2012 I want FUNCTION('y2012')

select t1.cola t1.colb, t1.colc, t2.y2012 from ..... Where t2.y2012 != 0;


to generalize

select * from FUNCTION( year_column )

select t1.cola t1.colb, t1.colc, t2.year_column from ..... Where 
t2.year_column != 0;

is it possible? if so how?