CREATE TABLE table_23204 ("Institution" TEXT, "Location" TEXT, "Nickname" TEXT, "Founded" FLOAT, "Type" TEXT, "Enrollment" FLOAT, "Joined" TEXT)

Name the enrollment for 2007-08
SELECT "Enrollment" FROM table_23204 WHERE "Joined" = '2007-08'
SELECT "Enrollment" FROM "table_23204" WHERE "Joined" = '2007-08'