function yearlyOwnerTokenWithdrawal () public onlyOwner 
    {
        require (crowdsaleClosed == true);
        require (
            ((now > stopTime + 1 years) && (yearlyTeamTokensPaid[0] == false))
            || ((now > stopTime + 2 years) && (yearlyTeamTokensPaid[1] == false))
            || ((now > stopTime + 3 years) && (yearlyTeamTokensPaid[2] == false))
        );

        tokenReward.transfer(beneficiary, yearlyTeamAmount);

        if (yearlyTeamTokensPaid[0] == false)
            yearlyTeamTokensPaid[0] = true;
        else if (yearlyTeamTokensPaid[1] == false)
            yearlyTeamTokensPaid[1] = true;
        else if (yearlyTeamTokensPaid[2] == false)
            yearlyTeamTokensPaid[2] = true;
    }