CREATE TABLE table_71505 ("Member countries" CLOB, "Population" CLOB, "Area  ( km\\u00b2 ) " CLOB, "GDP  ( billion US$ ) " CLOB, "GDP per capita  ( US$ ) " CLOB)

What is the population of the nation that has a GDP per capita (US$) of 11,929?
SELECT "Population" FROM table_71505 WHERE "GDP per capita (US$)" = '11,929'
SELECT "Population" FROM "table_71505" WHERE "GDP per capita (US$)" = '11,929'