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First language by age (%)

Source: Sociolinguistic Survey

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Geographical field

Basque Country

Basque Autonomous Community (BAC)

Araba/Álava

Bizkaia

Gipuzkoa

Navarre

Northern Basque Country

Lapurdi

Lower Navarre and Zuberoa

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2021
2016
2011
2006
2001
1996
1991

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