25 years of wrongful convictions: By the numbers

Getting thrown in jail for a crime you didn't commit is a nightmare scenario — one that has been a reality for more than 2,000 Americans since 1989

Of the 400 million serious criminal cases prosecutors have handled since 1989, at least 2,061 of them were wrongful convictions, according to a new report.
(Image credit: John Zich/CORBIS)

Last week, researchers at Columbia University released a detailed, book-length account of how Texas probably executed an innocent man, Carlos DeLuna, in 1989. This week, a new report from Northwestern University and the University of Michigan "picks up where the DeLuna case left off," says Andrew Cohen at The Atlantic. Focusing on the big picture, researchers from the two schools launched the first-ever National Registry of Exonerations, and their first report takes a stab at cobbling together hard-to-find, rarely publicized stories and statistics about Americans who've been cleared of crimes for which they were convicted but didn't commit. What they found: More than 2,000 people were wrongfully convicted of crimes since 1989. "If that were the extent of the problem we would be encouraged by these numbers," says Michigan law professor Samuel R. Gross. But sadly, it's just the tip of the iceberg. One hope of the registry is to find out where the system messes up, so more innocent people don't end up in jail. Here's a look at some of the key findings, by the numbers:

2,061

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400 million

Serious (non-traffic) cases prosecutors have handled since 1989, according to the National District Attorneys Association

891

Specific wrongful conviction cases detailed in the National Registry of Exonerations

93

Percent of the exonerated convicts who are men

50

Percent who are black

10.7

Average time, in years, from conviction to exoneration

10,000

Combined time, in years, the 891 exonerated prisoners spent behind bars

2.3 million

People incarcerated in the U.S.

1,170

Convicted defendants cleared in 13 "group exonerations" since 1995, following large police-corruption scandals, usually involving planted drugs or guns

416

People exonerated of wrongful homicide convictions

64

Percent of those convictions attributed to perjury or false accusations

101

Exonerated convicts who had been sentenced to death

203

People exonerated of wrongful adult-rape convictions

80

Percent of those convictions attributed to mistaken witness identification

102

People exonerated of wrongful child sexual abuse convictions

74

Percent of those cases attributed to "fabricated crimes that never occurred at all"

289

People cleared since 1989 due to DNA testing, 222 of them since 2000, according to the Innocence Project

17

Defendants cleared by DNA who had spent time on death row

129

People exonerated of crimes that never happened

135

People exonerated who had confessed to crimes they didn't commit

78

Exonerations in Cook County, Illinois (Chicago), since 1989, the most in the country. (The areas with the most exonerations aren't necessarily the ones with the most wrongful convictions.)

21

Exonerations in Dallas County, Texas, since 2007, the most in recent years

Sources: AP, Atlantic, Huffington Post, Innocence Project, National Registry of Exonerations [PDF], USA Today, Wall Street Journal, Wrongful Convictions Blog