A timeline of McDonald’s Big Mac prices through the decades clearly illustrates the state of the American economy. Us every day people often measure the state of the world’s finances through the inflation of products we use every day. It’s exactly why you can remember the price of a chocolate bar when you were a kid, compared to the price of the same chocolate bar now. McDonald’s knows there is an issueRecently, furious customers have been flocking to social media to moan about the prices of fast food giant McDonald’s. Because honestly, they’re atrocious. “$18 for Big Mac combo is beyond reaso…