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When will the global adult literacy rate reach 95%?

Literacy data published by UNESCO display a surprisingly steady trend. Since 1950, the adult literacy rate at the world level has increased roughly 5 percentage points every decade, from 55.7% in 1950 to 86.2% in 2015.

However, for four decades, the population growth was so rapid that the number of illiterate adults kept increasing, rising from 700 million in 1950 to 878 million in 1990.

Since then, the number has fallen markedly to 745 million in 2015, although it remains higher than in 1950 despite decades of universal education policies, literacy interventions and the spread of print material and information and communications technology.

Literacy data published by UNESCO display a surprisingly steady trend. Since 1950, the adult literacy rate at the world level has increased by 5 percentage points every decade on average, from 55.7 per cent in 1950 to 86.2 per cent in 2015.

See this document from UNESCO for more information, and page 21 in particular to reference the section quoted above.

This question asks: When will the global adult literacy rate as reported by UNESCO reach or exceed 95.0%?

For the purposes of this question, 'Adult literacy rate' refers to individuals aged 15 years or older, the definition used by UNESCO as of 2019. If UNESCO no longer uses this definition by the time a positive resolution would result, the question will resolve ambiguously.

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