Using American Express' 2019 SEC 10-k, what is the financial ratios, including profitability, liquidity, leverage, activity, and shareholders' return. Show all calculations: Return on total assets, return on stockholders' equity, return on common equity, operating profit margin, net profit margin, current ratio, quick ratio, inventory to net working capital, debt to assets, debt to equity, long term debt to equity, times interest earned, fixed charge coverage, inventory turnover, fixed assets turnover, total assets turnover, accounts receivable turnover, average collecting period, dividend yield on common stock, price earnings ratio, dividend payout ratio and cash flows per share.