This application separates GDP into several key components:
• Private and government consumption,
• Investment (further broken down into public, residential and non-residential investment),
• Trade (net exports, exports and imports) and
• Stockbuilding

It also shows how each of these components contributes to growth (top part), and how their growth and their weight in total GDP develops over time. The top-left chart, contribution to GDP growth, shows, for a given year N and for each variable, its value at N – its value at N-1 divided by GDP at N-1. The sum of all these contributions equals to total GDP growth. Choose a country from the list on the right. Then choose a variable by clicking on it in any of the top 3 charts (either click a variable name on the axis, a bar or a pie slice). This will update the bottom 3 charts. Alternatively, you can choose a year in any of the bottom 3 charts (either click a year on the axis or directly a point on the curve), and the top charts will be updated for that year. On any of the 6 charts, moving your mouse over them will give you additional information.

Source – http://www.oecd.org/site/0,3407,en_21571361_34374092_1_1_1_1_1,00.html