501.7 Reduction of Damages to Present Value Any amount of damages which you allow for [future medical expenses], [loss of ability to earn money in the future], [or] [(describe any other future economic loss which is subject to reduction to present value)] should be reduced to its present money value and only the present money value of these future economic damages should be included in your verdict. The present money value of future economic damages is the sum of money needed now which, together with what that sum will earn in the future, will compensate [claimant] for these losses as they are actually experienced in future years.