public double Income {
            get { return money; }
            set {
                if (value > 950 && value < 1600)
                {
                    money = value - 950;
                    }
                else if (value > 1600)
                {
                    money = value * 0.4;
                }
                else{
                    money = 0;
                }
            }
        }