how many times is the total s ton less than 2,983,137 and the u.s. rank less than 102?
CREATE TABLE "tonnage_for_port_of_anchorage" (
  "year" real,
  "u_s_rank" real,
  "total_s_ton" real,
  "domestic_s_ton" real,
  "foreign_total_s_ton" real,
  "foreign_imports_s_ton" real,
  "foreign_exports_s_ton" real
);
SELECT COUNT("year") FROM "tonnage_for_port_of_anchorage" WHERE "total_s_ton"<'2,983,137' AND "u_s_rank"<102;