In 1990-2005 what is the lowest Start with Convs smaller than 2?
CREATE TABLE "leading_point_scorers" (
  "player" text,
  "span" text,
  "start" real,
  "tries" real,
  "conv" real,
  "pens" real,
  "drop" real
);
SELECT MIN("start") FROM "leading_point_scorers" WHERE "span"='1990-2005' AND "conv"<2;