CREATE TABLE table_203_59 (id DECIMAL, "country" TEXT, "2000" DECIMAL, "2001" DECIMAL, "2002" DECIMAL, "2003" DECIMAL, "2004" DECIMAL, "2005" DECIMAL, "2006" DECIMAL, "2007" DECIMAL, "2008" DECIMAL, "2009" DECIMAL, "2010" DECIMAL, "2011" DECIMAL)

what country was the top producer of niobium in the year 2003 ?
SELECT "country" FROM table_203_59 ORDER BY "2003" DESC LIMIT 1
SELECT "country" FROM "table_203_59" ORDER BY "2003" DESC NULLS LAST LIMIT 1