private void set_results_text()
    {
        List <int> years = GraphStatistics.yearsWithMostPeopleAlive;
        int        amount_of_people_alive = GraphStatistics.mostPeopleAliveAtOnce;

        string year_string    = years.Count == 1 ? years[0].ToString() : get_comma_seperated_year_string(years);
        string results_string = "In " + year_string + " there was the most people alive with " + amount_of_people_alive + " living";

        m_results_text.text = results_string;

        m_left_side_results_output.text  = GraphStatistics.GetStringForAllYears(GraphStatistics.leftColumn, years[0]);
        m_right_side_results_output.text = GraphStatistics.GetStringForAllYears(GraphStatistics.rightColumn, years[0]);
    }
 public void SetTextForNewSelectedYear(int year)
 {
     m_left_side_results_output.text  = GraphStatistics.GetStringForAllYears(GraphStatistics.leftColumn, year);
     m_right_side_results_output.text = GraphStatistics.GetStringForAllYears(GraphStatistics.rightColumn, year);
 }