It is divided into 13 grades. The annual payment standard is set at 100 yuan, including 200 yuan, 300 yuan, 400 yuan, 500 yuan, 600 yuan, 700 yuan, 800 yuan, 900 yuan, 1000 yuan, 1500 yuan and 2000 yuan * * 13 grades. The insured person chooses his own grade to pay in a natural year, and pays once a year.