user: Question: What is the gdp per capita in 2008 for the region with a combined gross enrollment ratio of 86.6 in 2009?
Columns: ['Region', 'HDI', 'Life expectancy at birth (2001-2002)', 'Adult literacy rate (2009)', 'Combined gross enrollment ratio (2009)', 'GDP (PPP) per capita (2008)']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Arica and Parinacota + Tarapacá', '0.913', '77.1', '98.1', '94.0', 19885.0]
SQL:

assistant: SELECT "GDP (PPP) per capita (2008)" FROM "Table" WHERE "Combined gross enrollment ratio (2009)" = '86.6';