ten largest metropolitan economies in the world. Shanghai's six largest industries—retail, finance, IT, real estate, machine manufacturing, and automotive manufacturing—comprise about half the city's GDP. , Shanghai had a GDP of ($1.035 trillion in PPP) that makes up 3.85% of China's GDP, and a GDP per capita of (in nominal or US$41,624 in PPP). In 2021, the average annual disposable income of Shanghai's residents was () per capita, making it one of the wealthiest cities in China, but also the most expensive city in mainland China to live in according to a 2017 study by the Economist Intelligence Unit. Since 2018, Shanghai has been hosting the China International Import Expo (CIIE) annually, the world's first import-themed national-level expo. In 2021, Shanghai was the most expensive city in the world. Shanghai was the 5th wealthiest city in the world, with a total wealth amounts to $1.8 trillion, and Shanghai was ranked fifth-highest in the number of billionaires by Forbes. Shanghai's nominal GDP was projected to reach US$1.3 trillion in 2035 (ranking first in China), making it one of the world's Top 5 major cities in terms of GRP according to a study by Oxford Economics. As of August 2022, Shanghai ranked 5th in the world and 2nd in China (after Beijing) by the largest number of the Fortune Global 500 companies in the world. Shanghai was the largest and most prosperous city in East Asia during the 1930s, and its rapid redevelopment began in the 1990s. In the last two decades, Shanghai has been one of the fastest-developing cities in the world; it has recorded double-digit GDP growth in almost every year between 1992 and 2008, before the financial crisis of 2007–08. Finance Shanghai is a global financial center, ranking first in the whole of Asia & Oceania region and third globally (after New York and London) in the 28th edition of the Global Financial Centres Index, published in September 2020 by Z/Yen and China Development Institute. Shanghai is also a large hub of the Chinese and global technology industry and home to a large startup ecosystem. As of 2021, the city was ranked as the 2nd Fintech powerhouse in the world after New York City. , the Shanghai Stock Exchange had a market capitalization of , making it the largest stock exchange in China and the fourth-largest stock exchange in the world. In 2009, the trading volume of six key