From the following data, calculate Gross National Product at market prices:
(i) Undistributed profits of private corporate enterprises 200
(ii) Rent 400
(iii) Interest 200
(iv) Prifits 600
(v) Dividends 300
(vi) Wages and salaries 225
(vii) Net exports (-)20
(viii) Net indirect tax 70
(ix) Consumption of employees 250
(xi) Mixed income of self-employed 100
(xii) Net factor income from abroad (-)10