Read this: Agricultural protectionisma rare exception to Switzerland's free trade policieshas contributed to high food prices. Product market liberalisation is lagging behind many EU countries according to the OECD. Nevertheless, domestic purchasing power is one of the best in the world. Apart from agriculture, economic and trade barriers between the European Union and Switzerland are minimal and Switzerland has free trade agreements worldwide. Switzerland is a member of the European Free Trade Association (EFTA).

What is Switzerland's world ranking in domestic purchasing power?
What is the answer? (If it cannot be answered, return "unanswerable")
one of the best