Therefore using a basis of GDP per capita at purchasing power parity (PPP) is arguably more useful when comparing living. My plan is to answer them over a series of blog posts. B b Q ï 2 Ù « 1 (H) O Ù 8 b 2 (M) O Ù 8 b 3 (L) ½ È e ° Ù î R & ^ l å Ü É 4 ½ È e ° Ù î R.