By 2030 developing countries that boast young populations and super-dynamic economic growth are poised to leapfrog many of the current top dogs, which are mainly developed nations grappling with ageing populations and comparatively stagnant economic growth. As a result, the make-up of the world's top 10 richest countries based on GDP at purchasing power parity (PPP) is set to change dramatically. Be prepared for a surprise as we reveal who'll be the major players in 2030, as projected by Standard Chartered.