The world average of female top executives is 8 percent. Thailand has the highest proportion of female CEOs in the world, with 30 percent of companies employing female CEOs, followed by the People's Republic of China, with 19 percent. In the European Union the figure is 9 percent and in the United States it's 5 percent. Only 14.2% of the top five leadership positions at the companies in the S&P 500 are held by women, according to a recent CNNMoney analysis, out of those 500 companies, there are only 24 female CEOs.