half a year? Nothing comes to mind. Interestingly, 10 years is a different story! http://www.economist.com/content/big-mac-index http://www.economist.com/conte

half a year? Nothing comes to mind. Interestingly, 10 years is a different story! http://www.economist.com/content/big-mac-index http://www.economist.com/content/big-mac-index