CREATE TABLE table_79091 ("Year" FLOAT, "Gold" TEXT, "Silver" TEXT, "Bronze" TEXT, "Notes" TEXT)

WHAT YEAR HAS A SILVER FOR MATTHIAS MERZ?
SELECT MIN("Year") FROM table_79091 WHERE "Silver" = 'matthias merz'
SELECT MIN("Year") FROM "table_79091" WHERE "Silver" = 'matthias merz'