While Mark is correct that an increase in value of separate property due to appreciation remains separate property, Mark's argument ignores the principal that this exception only applies to the extent that marital assets have not contributed to the increase. See Meier v. Meier, 306 S.W.3d 692, 702 (Mo.App. E.D.2010). “Dividends and interest earned on separate property during a marriage are marital property.”