WHAT'S A BIS WORTH?

This year Jedward returns the year after hoping to make it better than last year's 8th. But what are the odds in Eurovision? We have a recent example of Germany's Lena who returned the year after winning and managed only 10th place. This seems to be the trend anyways if you look the bis makers over the decades.  In the 1950's Germany Margot Hielscher scored 4th and 7th while Italy's Domenico