You have a $2000$ Nissan that is expected to run for another three years, but you are considering buying a new Hyundai before the Nissan wears out. You will donate the Nissan to Goodwill when you buy the new car. The annual maintenance cost is $$150$ for the Hyundai and the annual maintenance cost of the old Nissan increases as time goes by$.$ It is $$1,280$ in the first year, $$1,400$ in the second year, and $$1,520$ in the third year. The price of your favorite Hyundai model is $$17,000,$ and it is expected to run for $15$ years. The net present value of new Hyundai is $$18,927\mathrm{.}39.$ Your opportunity cost of capital is $2$ percent. Ignore taxes. When should you replace the Nissan with the new Hyundai? $($Do not round intermediate calculations. Round final answer to $2$ decimal places, eg$.5\mathrm{.}275\mathrm{.}25.)$