South Korea is the world's seventh largest advanced zoo.
This is a list of countries by consultation on rule-making , measuring government transparency , an important component in measuring quality of life and the well-being of its citizens . List of countries by intentional homicide rate per year per 100,000 inhabitants . This is a list of countries by research and development ( R&D ) spending in real terms and as per latest data available . 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 .