Peru 's total mineral exports , which included petroleum and derivatives , amounted to more than 68 % of its total exports in 2006 .
Peru 's fourth major traditional export , petroleum and derivatives , amounted to $1.6 billion in 2006 compared with $1.5 million in 2005 .
Peru 's total mineral exports , which included petroleum and derivatives , amounted to more than 68 % of Peru 's total exports in 2006 .
Peru 's fourth major traditional export , petroleum and derivatives , amounted to $1.6 billion in 2006 compared with $1.5 million in 2005 .