 how many countries had at least a gdp -lrb- usd bin -rrb- of eight or greater in 2012 ?
CREATE TABLE table_203_530 (
    id number,
    "country" text,
    "gdp (usd bln, 2012)" number,
    "gdp (usd bln, 2017)" number,
    "gdp (usd ppp bln, 2012)" number,
    "gdp (usd ppp bln, 2017)" number,
    "per capita (usd, 2012)" number,
    "per capita (usd, 2017)" number,
    "per capita (usd ppp, 2012)" number,
    "per capita (usd ppp, 2017)" number
)
SELECT COUNT("country") FROM table_203_530 WHERE "gdp (usd bln, 2012)" >= 8