By the Numbers: Dec. 27-Jan. 3

$8,000

Increase in average real income after taxes for the bottom 50 percent of American earners since 1970, from $19,000 to $27,000

$800,000

Increase in average real income after taxes for the top 1 percent of earners since 1970, from $300,000 to more than $1.1 million

$4 million

Increase in average real income after taxes for the top .1 percent since 1970, from $1 million to $5 million

$20.5 million

Increase in average real income after taxes for the top .01 percent since 1970, from $3.5 million to more than $24 million

$31,000

Increase in average real income after taxes for Americans in the top 50 to 90 percent of earners

40,900

Number of people incarcerated for drug offenses in the United States in 1980

489,000

Number of people incarcerated for drug offenses in the United States in 2013

11

Percent of incarcerated individuals in need of substance-abuse treatment who receive treatment in jail or prison

Sources: The Triumph of Injustice, the Center for Prisoner Health and Human Rights