South Korea is ranked among the highest in something.
South Korea . Today , it is the world 's seventh largest advanced economy and fifth largest exporter with the G20 's largest budget surplus and highest credit rating of any country in East Asia . Globally , it ranks highly in personal safety , job security , ease of doing business and healthcare quality , with the world 's third highest health adjusted life expectancy and fourth most efficient healthcare system . In 2005 , it became the world 's first country to fully transition to high-speed Internet and today it has the world 's fastest Internet speed and highest smartphone ownership , ranking first in ICT Development , e-Government and 4G LTE coverage .