public static Growth getGrowth(int i) {
		switch (i) {
		case 1:
			return Slow;
		case 2:
			return Medium;
		case 3:
			return Fast;
		case 4:
			return Medium_slow;
		case 5:
			return Erratic;
		case 6:
			return Fluctuating;
		}
		return null;
	}