Eurovision Song Contest 1974 for Sweden), Bucks Fizz (winner in 1981 for the United Kingdom), and Celine Dion (winner in 1988 for Switzerland), all of whom launched successful careers. Based on the Sanremo Music Festival held in Italy since 1951, Eurovision has been broadcast every year since its inauguration in 1956, making it the longest-running annual international television contest and one of the world's longest-running television programmes. It is also one of the most watched non-sporting events, with audience figures of between 100 million and 600 million internationally. It has been broadcast in several countries that do not compete, such as the United
Think Twice (Celine Dion song) only by "My Heart Will Go On," and is widely credited amongst British fans as cementing Dion, previously most-known in the United Kingdom for her victory in the 1988 Eurovision Song Contest, as a major star to British audiences. The song went to number 1 all over Europe, including: Ireland (9 weeks at the top), United Kingdom (7 weeks), Belgium Flanders (5 weeks), Netherlands (4 weeks), Norway (4 weeks) and Sweden (4 weeks). It was also successful in Australia reaching number 2. "Think Twice" was certified Platinum and as of September 2017, it has sold 1,418,966 copies in the UK.