public function getCopyrightYear()
    {
        if ($this->YearStart && $this->YearFinish) {
            return sprintf('%d-%d', $this->YearStart, $this->YearFinish);
        } elseif ($this->YearStart && !$this->YearFinish) {
            return sprintf('%d-%d', $this->YearStart, date('Y'));
        } elseif (!$this->YearStart && $this->YearFinish) {
            return $this->YearFinish;
        }
        
        return (string) date('Y');
    }