What's the Württemberg in the year before 1929?
CREATE TABLE "1928_to_1933" (
  "year" real,
  "baden" text,
  "w_rttemberg" text,
  "nordbayern" text,
  "s_dbayern" text
);
SELECT "w_rttemberg" FROM "1928_to_1933" WHERE "year"<1929;