Table schema:
CREATE TABLE table_25042332_33 (gdp__ppp__per_capita__2008_ INTEGER, combined_gross_enrollment_ratio__2009_ VARCHAR)

Question: What is the gdp per capita in 2008 for the region that had a combined gross enrollment ration of 89.0?
SQL: SELECT MIN(gdp__ppp__per_capita__2008_) FROM table_25042332_33 WHERE combined_gross_enrollment_ratio__2009_ = "89.0"