Elon Musk became world's first trillionaire with SpaceX's listing on Nasdaq. Compared with the GDP of world's 10 largest economies, his $1 trillion fortune equals about 3.1% of US GDP, 4.8% of China, 18.4% of Germany, 22.7% of Japan, 23.5% of the UK, 24.1% of India, 27.8% of France, 37% of Russia, 37% of Italy and 38.5% of Brazil's GDP.