Tritium is a radioactive isotope of hydrogen that has the desirable characteristic of radioluminescence, which allows it to glow in the dark without the need for an external light source. Thus, tritium-filled tubes are often used for applications such as airplane cockpit instrument dials, watch hands, and emergency lighting. The half life of tritium is 12.32 years. Suppose you recently purchased a premium watch with tritium hands. How many years will it take for the watch hands to lose 95.6% of their original brightness? Round your solution to the nearest year. years