Suppose there is a simple one good economy that only produces spinning rims. In 2004, the economy was able to produce 500,000 sets of spinning rims at an amazing price of $100 per set. In 2005, the economy was able to produce 500,000 sets of spinning rims at a price of $200 per set. By what amount did real GDP increase between 2004 and 2005 in the simple one good economy