if year < 1990 | year > 2018 | mod(year,2) == 1
disp("This is not an even year from 1990 to 2018");
else
male_vote = interp1(YourTable.Year, YourTable.Male, year);
female_vote = interp1(YourTable.Year, YourTable.Female, year);
go = 0;
end
But I would suggest
if year < 1990 | year > 2018 | mod(year,2) == 1
disp("This is not an even year from 1990 to 2018");
else
mask = YourTable.Year == year;
male_vote = YourTable(mask).Male;
female_vote = YourTable(mask).Female;
go = 0;
end



