(1) The Commonwealth is liable to pay additional compensation under subsection 71(1) in respect of a single aggravated injury or disease only if the increase in the person's overall impairment resulting from the aggravation or material contribution constitutes at least 5 impairment points.
(2) The amount of additional compensation that the Commonwealth is liable to pay under subsection 71(1) in respect of the aggravated injury or disease of a person is the amount payable in respect of the impairment points of the person, and the effect on the person's lifestyle, from the aggravation or material contribution.