CREATE TABLE table_42303 ("Aces" FLOAT, "Player" CLOB, "Opponent" CLOB, "Year" FLOAT, "Event" CLOB, "Sets" FLOAT, "Result" CLOB)

what year was the opponent caroline garcia?
SELECT SUM("Year") FROM table_42303 WHERE "Opponent" = 'caroline garcia'
SELECT SUM("Year") FROM "table_42303" WHERE "Opponent" = 'caroline garcia'