But think of the proportion of wealth / GDP that isn't leaving the country to import oil and natural gas. It makes sense that producing the vast majority of you

But think of the proportion of wealth / GDP that isn't leaving the country to import oil and natural gas. It makes sense that producing the vast majority of your energy needs yourself would have a significant positive impact on your economy. Not that the single trite explanation could address the whole of their success, but certainly could account for a 'bump'