1. The per capita GDP is a proxy for the living standard. The per capita GDP of the world grew at a snails pace (less than 0.1% per year) for the first 1800 years since the birth of Jesus. If your income grew at annual rate of 0.1%, how many years would it take to double your living standard?

   		Almost 200 years
   		Almost 400 years
   		Almost 600 years
   		Almost 700 years
   		Almost 900 years