Table 21-4 Quintile Shares of Income by Quintile (Percent) 2000 2010 2019 Bottom Quintile 4.3 3.8 3.9 Second Quintile 9.8 9.4 9.2 Middle Quintile 15.4 15.4 14.8 Fourth Quintile 22.7 23.5 22.5 Top Quintile 47.7 47.9 49.5 Source: U.S. Bureau of Census Refer to Table 21-4. In 2019, the top quintile of families have a. 48.8% more income than the bottom quintile of families. b. 9% more income than the bottom quintile of families. c. 23.4% more income than the bottom quintile of families