CREATE TABLE table_39346 ("County" TEXT, "1948" FLOAT, "1956" FLOAT, "1966" FLOAT, "1977" FLOAT, "1992" FLOAT, "2002" FLOAT, "2011" FLOAT)

Which 2011 is the lowest one that has a 1948 smaller than 15872624, and a 1966 of 263103, and a 1992 larger than 266308?
SELECT MIN("2011") FROM table_39346 WHERE "1948" < '15872624' AND "1966" = '263103' AND "1992" > '266308'
SELECT MIN("2011") FROM "table_39346" WHERE "1948" < '15872624' AND "1966" = '263103' AND "1992" > '266308'