gross capital formation as a percentage of gdp
Gross fixed capital formation Differences in the investment rates between countries very often mirror different levels of economic development and catching-up processes. This may be illustrated for the example of the member states of the European Union. Since the beginning of the millennium the average ratio of GFCF to GDP fluctuates around 20% in the European Union of 27 member states as a whole (EU-27). For some member states which accessed the Union in 2004 and later (mostly countries in central and eastern Europe where the level of GDP is still comparably low), the ratio rose to more than 25% in some years. When the consumption of fixed capital is deducted from the figures the resulting ratio of net fixed capital formation to net domestic product is around 8% for the average of the EU-27; again substantially higher ratios of more than 15% can be observed for some of the new EU member states such as Spain. Higher investment rates in poorer countries will lead to more equivalent living condition across Europe in the long-term through accelerated economic growth and an improved equipment of the labour force with modern infrastructure and technology.[citation needed] The detailed data on which these observations were made can be downloaded from Eurostat's website.
Economic growth In the Solow-Swan model if productivity increases through technological progress, then output/worker increases even when the economy is in the steady state. If productivity increases at a constant rate, output/worker also increases at a related steady-state rate. As a consequence, growth in the model can occur either by increasing the share of GDP invested or through technological progress. But at whatever share of GDP invested, capital/worker eventually converges on the steady state, leaving the growth rate of output/worker determined only by the rate of technological progress. As a consequence, with world technology available to all and progressing at a constant rate, all countries have the same steady state rate of growth. Each country has a different level of GDP/worker determined by the share of GDP it invests, but all countries have the same rate of economic growth. Implicitly in this model rich countries are those that have invested a high share of GDP for a long time. Poor countries can become rich by increasing the share of GDP they invest. One important prediction of the model, mostly borne out by the data, is that of conditional convergence; the idea that poor countries will grow faster and catch up with rich countries as long as they have similar investment (and saving) rates and access to the same technology.