Change of the demand for wheat

In Korea, we have changed with regard to wheat flour. Wheat has been regarded as a cheap crop since the Korean war in 1950. At that time, we didn't have enough food to eat like rice. Therefore rice, which was not plentiful, was regarded as an expensive crop, while wheat, which was common, was regarded as a cheap one. Today, however, because Korea has become a richer country, rice is not an expensive crop anymore. In the case of wheat, its demand has became increasingly more and more. Because of the demand for wheat, wheat has been cultivated more and more.