According to the Forbes, aggregate wealth of 1645 world's billionaires, which totals in $6.4 trillion as of March 2014, is bigger than Japanese GDP - third in the world's GDP ranking with the value of $6 trillion. So, wealth of 0.00002% of world's population account for 9% of the world's GDP ($72 trillion as of 2012).
of
According to the Forbes, aggregate wealth of 1645 world's billionaires, which totals in $6.4 trillion as of March 2014, is bigger than Japanese GDP - third in the world's GDP ranking with the value of $6 trillion. So, wealth of 0.00002% of world's population account for 9% of the world's GDP ($72 trillion as of 2012).