มีสนธิสัญญากี่ฉบับที่ถูกนำมาใช้ในปี 1986 ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
how many treaties had been introduced by 1986 ?It is not neccessary to use all the tables.
 table_203_109:  id [ number]  "treaty" [ text]  "organization" [ text]  "introduced" [ number]  "signed" [ number]  "ratified" [ number] 
SELECT COUNT("treaty") FROM table_203_109 WHERE "ratified" >= 1986