private void Percentage_Click(object sender, RoutedEventArgs e)
        {
            int percentage = Int32.Parse((string)((Button)sender).Tag);

            if (currentThing != null && !currentThing.YesCounters.ContainsKey(currentQuestion))
            {
                currentThing.YesCounters.Add(currentQuestion, new Tuple <int, int>(percentage, 100));
            }
            StatsHelper.SaveToFile();
            NextQuestion();
        }