[555imon]

Since Sweden adopted anti P2P laws (IPRED) in 2009 Spotify usage has grown. In 2009 France adopted an anti P2P law (HADOPI). Since then music sales in France declined at a lesser rate than global sales and therefore artist earnings declining less than on global level (http://www.fortherechord.com/hadopi-and-cartes-musique-franc...). This would point to a correlation between "piracy" and music sales.