From the article:
if we compare countries with a high frequency of piracy – and little effort to tackle it – with those with lower rates of piracy a telling picture emerges.Spain, who along with Brazil has the highest rate (45%) of internet users getting their music from illegal sites, has seen overall music sales fall by around 55% in the past five years (last year alone it declined by 22%). In contrast South Korea, whose government has taken action against illegal downloading, is one of the few countries seeing an overall growth in revenue for recorded music by 10% in the first half of 2010.
It appears the new local acts have suffered the biggest setback from Spain's recording industry bottoming out. In 2004, local acts accounted for nearly 80% of all sales. That share has now shrunk to 40%. The steep decline in revenue has seen label investment in new acts drying up. In the past two years, not a single new Spanish artist has featured in the country's top 50 selling albums, compared to 10 in 2003.
But of course that "isn't proof"......