The diagram below illustrates the circular flow of income for an open economy with government.

Suppose that the macroeconomic data for this economy over a given financial year is recorded as follows:

• Household Savings ($S$) = £42bn
• Government Taxation ($T$) = £56bn
• Spending on Imports ($M$) = £38bn
• Planned Investment ($I$) = £48bn
• Government Expenditure ($G$) = £52bn

If the economy is in circular flow equilibrium, what is the value of Exports ($X$)?