What is the self-supporting growth rate for SANA International Inc in percent? SANA generated $5,000,000 in sales during 2015, and its year-end total assets were $2,500,000. Also, at year-end 2015, spontaneous liabilities were $700,000. Looking ahead to 2016, 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 4%, and its payout ratio will be 60%.