Table schema:
CREATE TABLE table_name_38 (metropolitan_population__2006__millions INTEGER, metropolitan_area VARCHAR, gdp__ppp__us$_per_capita VARCHAR)

Question: What is the average 2006 metropolitan population of Lima with a GDP per capita over $13,100?
SQL: SELECT AVG(metropolitan_population__2006__millions) FROM table_name_38 WHERE metropolitan_area = "lima" AND gdp__ppp__us$_per_capita > 13 OFFSET 100