What is the self-supporting growth rate for Typhoonforce in percent? Typhoonforce generated $5,000,000 in sales during 2018, and its year-end total assets were $2,500,000. Also, at year-end 2018, spontaneous liabilities were $700,000. Looking ahead to 2019, the company estimates that its assets must increase at the same rate as sales, its spontaneous liabilities will increase at the same rate as sales, its profit margin will be 2%, and its payout ratio will be 66%..