Index Archive

Estimated number of Nigerians killed in clashes between herders and farmers over the first six months of 2018

: 1,300

In fighting with Boko Haram

: 217

Factor by which more Americans are murdered each year by knives than by rifles

: 4

Number of states since 2010 that have repealed or weakened knife laws

: 21

Chance that an American believes that all members of the armed services should be described as heroes

: 1 in 2

That a German does

: 1 in 7

Number of children since 2007 who have been denied UK citizenship for failing the country’s “character test”

: 517

Minimum age of children to whom the test is applied

: 10

Amount of FEMA funding that has been transferred to ICE this year

: $9,800,000

Number of “two-hundred-year floods” Houston has suffered since 2015

: 4

Percentage of Americans who have had to evacuate their homes because of a natural disaster

: 22

Distance, in feet, by which the Earth’s axis of spin has shifted since 1899

: 34

Estimated percentage of that shift that is due to climate change

: 40

Factor by which national parks have warmed more rapidly than the United States as a whole since 1895

: 2.5

Portion of US households in 2015 that reported keeping temperatures at “unhealthy or unsafe” levels to save money

: 1/10

Average value of a payday loan in the United States

: $375

Average amount a borrower ends up spending in fees on a payday loan

: $520

Percentage of US public employee applicants for student loan forgiveness who have been approved since last year

: 0.3

Portion of millennial men who identify as socialists or democratic socialists

: 2/5

Of millennial women

: 1/5

Percentage by which women are more likely than men to volunteer for work tasks that probably won’t lead to promotions

: 48

Percentage of Americans who believe that men and women have different leadership styles

: 57

Percentage of those Americans who think women generally have the better approach

: 22

Who believe that men generally do

: 15

Portion of US companies that claim to have been affected by prescription drug abuse among their employees

: 7/10

Minimum number of US cities that have announced plans to establish supervised drug consumption sites

: 5

Estimated minimum number of cities that have such sites worldwide

: 100

Number of people who have ever died of an overdose at one of these sites

: 0

Percentage by which a US teenager was more likely to use marijuana than adults in their fifties or sixties in 2011

: 121

By which adults in their fifties or sixties are more likely to use it than a teenager today

: 31

Factor by which the average South Korean man spends more on skin care than the average man in any other country

: 2.3

Portion of US men who do not regard changing their underwear daily as “very important” behavior

: 1/5

Percentage of Americans who say they have and enjoy a large social circle

: 16

Percentage of cell phone calls in 2017 that came from scammers

: 3.7

Estimated percentage of cell phone calls next year that will

: 45

Percentage of Americans aged 13 to 17 who cite texting as their favorite way to communicate with friends

: 35

Who cite talking in person

: 32

Percentage of interviews with professional baseball players that feature a variation of the phrase “one game at a time”

: 7

That feature a variation of “a heck of a game”

: 50

Percentage of adults last year who reported doing or learning something interesting the previous day

: 46

Harper’s Index

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