CREATE TABLE table_204_408 (id DECIMAL, "nation" TEXT, "1986" TEXT, "1989" TEXT, "1991" TEXT, "1997" TEXT, "1999" TEXT, "2000" TEXT, "2003" TEXT, "2005" TEXT, "2007" TEXT, "2009" TEXT, "2011" TEXT, "years" DECIMAL)

what is the total number of nations ?
SELECT COUNT("nation") FROM table_204_408
SELECT COUNT("nation") FROM "table_204_408"