CREATE TABLE table_28471 ("Institution" TEXT, "Location" TEXT, "Nickname" TEXT, "Founded" FLOAT, "Enrollment" FLOAT, "Joined" FLOAT)

Name the enrollment for tomcats
SELECT "Enrollment" FROM table_28471 WHERE "Nickname" = 'Tomcats'
SELECT "Enrollment" FROM "table_28471" WHERE "Nickname" = 'Tomcats'