What does this CHART of COUNTRIES show?

What does this CHART of COUNTRIES show?

This chart obviously shows a list of countries, ordered by percentage.

What does the chart show? What do the percentages mean?

Please vote in the poll.

Percentage of people in poverty
Percentage of people who can speak English
Percentage of people with a college degree
Percentage of people who own a home
Percentage of people who own a car
Percentage of people who have appeared on a TV show
None of the above - tell us what they really show
Select gender and age to cast your vote:
Updates
11 mo
Thanks to all for participating.

This chart shows the "Percentage of people with a college degree".

Congratulations to the one-third of voters who got it right.
And thanks to some very creative alternative responses.
What does this CHART of COUNTRIES show?
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