CREATE TABLE table_38559 ("Name" CLOB, "Street address" CLOB, "Years as tallest" CLOB, "Height feet / m" CLOB, "Floors" FLOAT)

What were the years that the building at 200 sw harrison was considered to be the tallest building?
SELECT "Years as tallest" FROM table_38559 WHERE "Street address" = '200 sw harrison'
SELECT "Years as tallest" FROM "table_38559" WHERE "Street address" = '200 sw harrison'