Olympic Order in exceptional circumstances. Traditionally, the IOC bestows the Olympic Order upon the chief national organiser(s) at the closing ceremony of each respective Olympic Games. The insignia of the Olympic Order is in the form of a "collar" (or chain), in Gold, Silver or Bronze according to grade; the front of the chain depicts the five rings of the Olympic Movement, flanked on either side by "kotinos" emblem (olive wreath). A lapel badge, in the form of the five rings in Gold, Silver and Bronze according to grade, is presented to recipients to wear as appropriate. Nadia Comăneci is the only
Olympic Games Games, at 324%. London 2012 had a cost overrun of 76%, Sochi 2014 of 289%. Many economists are sceptical about the economic benefits of hosting the Olympic Games, emphasising that such "mega-events" often have large costs while yielding relatively few tangible benefits in the long run. Conversely hosting (or even bidding for) the Olympics appears to increase the host country's exports, as the host or candidate country sends a signal about trade openness when bidding to host the Games. Moreover, research suggests that hosting the Summer Olympics has a strong positive effect on the philanthropic contributions of corporations headquartered in