Accounting for 4.24% of the global population, Americans collectively possess 29.4% of the world's total wealth, the largest percentage of any country.[341][342] The U.S. also ranks first in the number of billionaires and millionaires in the world, with 724 billionaires and 10.5 million millionaires as of 2020.[343][344] Prior to the 2019–2021 global SARS-CoV-2 pandemic, Credit Suisse listed some 18.6 million U.S. citizens as having a net worth in excess of $1 million.[345] In 2020, the Food Security Index ranked the United States 11th in food security, giving the country a score of 77.5/100.[346] Americans on average have more than twice as much living space per dwelling and per person as EU residents.[347] For 2019, the United Nations Development Programme ranked the United States 17th among 189 countries in its Human Development Index (HDI) and 28th among 151 countries in its inequality-adjusted HDI (IHDI).[348]