| Economy | Household Consumption | Investment | Government Expenditure | Net Exports (Exports - Imports) |
|---|---|---|---|---|
| Australia | 55% | 23% | 20% | 2% |
| South Korea | 48% | 33% | 18% | 1% |
| United Kingdom | 61% | 18% | 22% | -1% |
| Brazil | 63% | 19% | 19% | -1% |
With reference to Table 1, explain the term 'investment'.
