The country's growing economic problems have resulted in Greek business owners ranking among the most highly stressed in the world, according to a research survey taken in 36 countries. A Grant Thornton International Business Report ranked Greece in fifth place on a list assessing rising stress levels for business owners, with 68 percent saying that they have more anxiety than they did a year ago. China took first place, where 76 percent of business leaders said their stress has increased, with Mexico holding the second position, followed by Turkey and Vietnam respectively. «In mainland China, the pressure is on to keep up with the pace of expansion, while in Ireland, for example, the economy is retracting and business owners are worried about how they will keep their business alive,» said Alex MacBeath, global leader of business services at Grant Thornton International. Stress levels were lowest in Sweden and Denmark. Questioned about the source of their problems, business owners pointed to the economic climate, low cash flow and competitors.