How do aggregate wealth-to-income ratios evolve in the long run and why? We address this question using 1970 … able to extend our analysis as far back as 1700. We find in every country a gradual rise of wealth-income ratios in recent … growth, in line with the β=s/g Harrod-Domar-Solow formula. That is, for a given net saving rate s= 10%, the long run wealth-income …