23% of america is illiterate, page-13

It's probably a lot higher in OZ.

I would prefer to declare that:

23% of Americans are illiterate. A country (an inanimate object)can't be illiterate, but its citizens can.

Of course, we have to remember that the meaning of the word illiterate has changed and it no longer means that you can't read or write. We now talk about Functional Literacy, which can be described as follows:

“A person is functionally literate when he
has acquired the knowledge and skills in reading and
writing which enable him to engage in all those activities
in which literacy is normally assumed in his culture or
group” But often defined in practice as 4th-grade
education (UC Berkely School of Information).