function calcMultiplier() public view returns (uint) {

        if (totalInvested <= 20 ether) {
            return 105;
        } else if (totalInvested <= 50 ether) {
            return 104;
        } else if (totalInvested <= 100 ether) {
            return 103;
        } else if (totalInvested <= 200 ether) {
            return 102;
        } else {
            return 101;
        }

    }