Look at the balance sheet 10K and 10Q filings. Additional Paid-In Capital is basically all the accumulated equity investment. Add in the current long-term deb

Look at the balance sheet 10K and 10Q filings. Additional Paid-In Capital is basically all the accumulated equity investment. Add in the current long-term debt. That gives you an approximate number for the investment capital to date (though it doesn't include any long-term debt that was repaid).