1. Development indicators Gianni Vaggi University of Pavia September 2013 The economy

4. World Bank income groups GNI per capita 2011, WDI 2013 Low$ 1,025 or less Lower middle$ 1,026 – 4,035 Upper middle$ 4,036 – 12,475 High$ 12,476 or more

6. World Income Distribution, by percentile, 2000

8. Purchasing Power Parities-1

9. Purchasing Power Parities-2

18. World GDP changes

20. GDP growth rate (%), 1974-2012

21. World Output Growth, 2005-2013