Question: How much of the population of Tunisia were French-speakers in 2010?
About the article "Tunisia", section "Language".

Candidate passages:
Arabic is the official language, and Tunisian Arabic, known as Derja, is the local, vernacular variety of Arabic and is used by the public.
There is also a small minority of speakers of Shelha, a Berber language.
French also plays a major role in Tunisian society, despite having no official status.
It is widely used in education (e.g., as the language of instruction in the sciences in secondary school), the press, and in business.
In 2010, there were 6,639,000 French-speakers in Tunisia, or about 64% of the population.
Italian is understood and spoken by a small part of the Tunisian population.
Shop signs, menus and road signs in Tunisia are generally written in both Arabic and French.
There are also thousands of English or 20% of the population can speak or at least make a conversation with the language specifically those who are in 20s of their ages do speak the language fluently.
In 2000, 1,961,993 residents of Harris County spoke English only.
The five largest foreign languages in the county were Spanish or Spanish Creole (1,106,883 speakers), Vietnamese (53,311 speakers), Chinese (33,003 speakers), French including Cajun and Patois (33,003 speakers), and Urdu (14,595 speakers).
Among those who spoke other languages, 46% of Spanish speakers, 37% of Vietnamese speakers, 50% of Chinese speakers, 85% of French speakers, and 72% of Urdu speakers said that they spoke English at least "very well". 
The number of persons known to be fluent in Catalan varies depending on the sources used.
A 2004 language study did not indicate the total number of speakers, but showed a total estimate of 9–9.5 million, by matching the percentage of speakers to the population of each area where Catalan is spoken.
The web site of the Generalitat de Catalunya estimated that as of 2004 there were 9,118,882 speakers of Catalan.
These figures only reflect potential speakers; today it is the native language of only 35.6% of the Catalan population.
According to "Ethnologue: Languages of the World", ed.
17, Catalan had a total of 7.2 million native speakers in 2010, and 5 million second-language speakers in 1994.
The most important social characteristic of the Catalan language is that all the areas where it is spoken are bilingual in practice: together with the French language in Roussillon, with Italian in Alghero, with Spanish and French in Andorra and with Spanish in the rest of the territories.
1.
The number of people who understand Catalan includes those who can speak it.
2.
Figures relate to all self-declared capable speakers, not just native speakers.  
In terms of viability, the state of the Russian language in the US is much better compared to other European languages (such as French and German), although a considerable minority of the children born to Russian speaking parents are raised up as monolingual English speakers.
According to the 2010 Census data, 14.7% of the Russian speakers in the US are aged between 5 and 17.
This is significantly lower than the English speakers (18.8% aged 5–17), but much higher when compared to speakers of Polish (11.3%) and Hungarian (6.8%).
Russian speaking population is younger in states with large Old Believer or former-USSR Evangelical concentrations, such as Alaska and Oregon.
Table: Percentage of people aged 5 to 17 years among the Russian speaking population in the US, according to the 2010 Census <br>Note: Total excludes children under 5 years of age, living in Russian speaking households 
As of 2010, 86.43% of the population spoke English as their primary language, while Spanish was spoken by 6.38%, 1.18% spoke Chinese, 0.57% were speakers of Korean, and 0.52% spoke French as their native language.