Bulgaria has a population of over 7.6 million people living in an area of around 111,000 square km. The current president is Georgi Purvanov. Notable Bulgarians mentioned include poets and revolutionaries from the 19th century, the inventor of the first digital computer, a folk singer whose song was sent into space on the Voyager mission, several Olympic and world champions in sports, and the country's performance in soccer's World Cup.