\[ {GDP{\text{ }}by{\text{ }}expenditure{\text{ }}approach,{\text{ }}GDP = {\text{ }}C + I + G + \left( {X - M} \right)} \]
\[begin{array}{l} GDP{\text{ }}by{\text{ }}Income{\text{ }}Approach,{\text{ }}GDP = \ national{\text{ }}income + {\text{ }}capital{\text{ }}con\sumption{\text{ }}allowance + {\text{ }}statistical{\text{ }}discrepancy end{array}\]
Where: