CREATE TABLE table_59202 ("Year" FLOAT, "Lok Sabha" TEXT, "Members of Parliament" TEXT, "Party Won" TEXT, "Winner's % votes" TEXT, "Trailing Party" TEXT, "Trailing Party % votes" TEXT)

What is the lowest Year, when Lok Sabha is '4th Lok Sabha'?
SELECT MIN("Year") FROM table_59202 WHERE "Lok Sabha" = '4th lok sabha'
SELECT MIN("Year") FROM "table_59202" WHERE "Lok Sabha" = '4th lok sabha'