The components of GDP (Gross Domestic Product) are consumption, investment, net exports and inventories.
Consumption - health care, food etc. (60% of total spending).
Investment - Tools, sewing machines, factories. (15-20% of total spending)
Net Exports ? This is the value of goods sold to overseas companies, less the value of goods bought from overseas.
Aggregate expenditure (AE) = (consumption) + (investment) + (government) + (X-M) (Net exports).