what is the best returning index since january 1, 2000

The Nasdaq Composite (IXIC) has had the highest return since January 1, 2000 by a major index, returning 507.6%.

ASSET% RETURN
the Nasdaq Composite (IXIC)
507.64%
the S&P 500 (GSPC)
415.91%
the Dow Jones Industrial Average (DJI)
350.1%