original: from 1978 until 2000 it was an independent municipality .
simplifications: it was an independent city from 1978 to 2000 . it was an independent municipality from 1978 to 2000 . from 1978 until 2000 it was an free municipality . it was an independent municipality from 1978-2000 . the town was independent between 1978 and 2000 . from 1978 until 2000 it was an independent municipality . from 1978 until 2000 it was an independent municipality . from 1978 to 2000 it was an independent city .