Italy per 1,000 people) and 4,015,000 goods vehicles circulated on the national road network. The national railway network, state-owned and operated by Rete Ferroviaria Italiana, in 2008 totalled of which is electrified, and on which 4,802 locomotives and railcars run. The national inland waterways network comprised of navigable rivers and channels in 2002. In 2004 there were approximately 30 main airports, including the two hubs of Malpensa International in Milan and Leonardo da Vinci International in Rome, and 43 major seaports, including the seaport of Genoa, the country's largest and second largest in the Mediterranean Sea. In 2005 Italy maintained a
What Is Love at number two in the United Kingdom and Germany and hit number one in 13 other countries: Austria, Belgium, Denmark, Finland, France, Ireland, Italy, Netherlands, Norway, Portugal, Spain, Switzerland and Zimbabwe. Debuting at number 87 on 28 August 1993, the song reached number 11 on the Hot 100 in the United States. The song also peaked at number 12 in Australia. By March 1994, worldwide sales of "What Is Love" had already reached 2.6 million. When asked about the meaning of "What Is Love" in a 2015 interview, Haddaway said: "Billboard" wrote about the song: "Glorious pop/house ditty recently topped