The economic growth is a major indicator which estimates a country's capacity to improve its population well-being level. The economic literature associates economic growth with an increase of either a total or per capita supported production on the long time. The growth rhythm corresponds to the production rate and the income growth rate on the long term. The economists of the industrial revolution has identified in the capital accumulation, the dynamic of that movement. Investment is a particular element of the demand, since it allows to increase the capital stock, and thus to increase the production capacities. Growth realization is an essential aim of the economic policy. ln Ramsey's model the growth bases essentially on the physical capital accumulation. So it is fundamental to study the factors which favor this accumulation in the long term or slow it down on the contrary. Among these factors are the determiners of savings.
