Mortality is based on the following 2-year select table: 901 9[s]+1 70 71 0.05 0.06 0.07 0.08 0.10 0.12 9x+2 72 73 x+2 A special 2-year term insurance on [70] pays a benefit of 1000 at the end of the year of death if death occurs in the first year and 2000 at the end of the year of death if death occurs in the second year. Let Z be the present value random variable for this insurance. Calculate Var(2) if 1-0.04.