The Nikkei stock index on Monday climbed to a fresh six-year high to close out the last trading day of 2013.

The index soared 57 percent for the year to score its biggest annual gain since 1972, powered by aggressive fiscal and radical monetary stimulus programs that boosted exporters by weakening the yen.

At the close of trading Monday the 225-issue Nikkei stock average gained 112.37 points, or 0.69 percent, from Friday to end at 16,291.31, its highest close since Nov. 2, 2007.