It's a list made up of 50 Eurovision songs most successful in their semi-finals according to a percentage of available points. The video was made to see how well songs did in their semis. Every song's amount of points was divided by maximum possible score which the song could be awarded in the semi-final. The video includes songs which competed in the semi-finals from 2004 to 2017. Therefore, automatic qualifiers are not in the list. In case of a tie current rules of Eurovision are applied. The one who gets the highest percentage of the countries who awarded points wins. If there is still a tie, it is counted how many sets of maximum points in relation to the number of countries each country received, etc. All rights belongs to EBU.