Bayanai kan kiba da arziki

Dangantakar kiba da arziki 1980

Hakkin mallakar hoto BBC World Service
Image caption Bayanai kan kiba da arziki

Dangantakar kiba da arziki 1990

Hakkin mallakar hoto BBC World Service
Image caption Bayanai kan kiba da arziki 1990

Dangantakar kiba da arziki 2000

Hakkin mallakar hoto BBC World Service
Image caption Bayanai kan kiba da arziki 2000

Dangantakar kiba da arziki 2008

Hakkin mallakar hoto BBC World Service
Image caption Bayanai kan kiba da arziki 2008