Could this be a case of the Dutch disease? Where gas revenues in the sixties increased the value of the Gilder, and so had a big impact on the rest of the econ

Could this be a case of the Dutch disease? Where gas revenues in the sixties increased the value of the Gilder, and so had a big impact on the rest of the economy. With state income a sovereign wealth fund in another company could be set up, to smooth out the income over decades; however this is a private company. If Denmark was in the Euro zone then the far larger based currency wouldn’t be so destabilised. I am not an Economist, any or all that I have written could be wrong.