South Korea is East Asia's most developed country in the Human Development Index. It has the world's eighth highest median household income, the highest in Asia, and its singles in particular earn more than all G7 nations. Globally, it ranks highly in personal safety,[36] education, 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.[37] It leads the OECD in graduates in science and engineering[38] and is ranked third in the Youth Wellbeing Index.[39] Home of Samsung, the world's leading smartphone and TV maker,[40][41] LG and Hyundai-Kia, South Korea was named the world's most innovative country in the Bloomberg Innovation Index,[42] ranking first in business R&D intensity and patents filed per GDP. Due to its development and capabilities, political scientists have ranked it among Asia-Pacific's middle powers.[43] It has the world's fastest Internet speed and highest smartphone ownership, ranking first in ICT Development, e-Government[44] and 4G LTE coverage. In 2005, it became the world's first country to fully transition to high-speed Internet and start the world's first mobile TV broadcast with 97% of cellphones already having Internet access.[45]