LOS ANGELES (MarketWatch) -- Standard & Poor's on Friday downgraded its long-term sovereign credit rating on the Netherlands to AA+ from AAA, citing growth concerns. S&P said the country's growth prospects are weaker than it had previously anticipated. "We do not anticipate that real economic output will surpass 2008 levels before 2017, and believe that the strong contribution of net exports to growth has not been enough to offset a weak domestic economy," S&P said in a statement. The outlook is stable, reflecting the agency's view "that risks stemming from low growth and the related fiscal outturn are balanced against strong export performance, a net creditor position, and high GDP per capita."