A residential area, the house is sold by stages, and the government gives preferential treatment. Xiaoming bought a house of 600,000 yuan and paid 65,438+10,000 yuan in the first year. Starting from the second year, the annual house payment should be 50,000 yuan plus the interest of the remaining arrears for one year, and the known annual interest rate is 4%. In which year, Xiaoming's family had to pay a total of 60 thousand yuan. (x is greater than or equal to 2)