CREATE TABLE table_15975 ("#" FLOAT, "City" TEXT, "1981 Census" FLOAT, "1991 Census" FLOAT, "2001 Census" FLOAT, "2010 Est." FLOAT, "Region" TEXT)

What's the 2001 census of the region of Abruzzo where the 1871 census is bigger than 51092.0?
SELECT MIN("2001 Census") FROM table_15975 WHERE "Region" = 'Abruzzo' AND "1981 Census" > '51092.0'
SELECT MIN("2001 Census") FROM "table_15975" WHERE "1981 Census" > '51092.0' AND "Region" = 'Abruzzo'