Each participating country submits an original song to be performed on live television and radio and then casts votes for the other countries' songs to determine the most popular song in the competition. The contest has been broadcast every year for sixty-two years, since its inauguration in 1956, and is one of the longest-running television programmes in the world. It is also one of the most watched non-sporting events in the world,[3] with audience figures having been quoted in recent years as anything between 100 million and 600 million internationally.[4][5] Eurovision has also been broadcast outside Europe to several countries that do not compete, such as the United States, Canada, New Zealand, and China.