CREATE TABLE table_27844 ("Institution" TEXT, "Location" TEXT, "Type" TEXT, "Joined" FLOAT, "Enrollment" FLOAT, "Nickname" TEXT)

What is the enrollment for the institution that joined in 1987?
SELECT MIN("Enrollment") FROM table_27844 WHERE "Joined" = '1987'
SELECT MIN("Enrollment") FROM "table_27844" WHERE "Joined" = '1987'