Simple:
<p>Copyright © <script>document.write(new Date().getFullYear())</script> Your Name All Rights Reserved</p>
Date range:
<p> Copyright © 2014-<script>document.write(new Date().getFullYear())</script> Your Name All Rights Reserved</p>
Center copyright notice:
<p style="text-align: center"> Copyright © 2014-<script>document.write(new Date().getFullYear())</script> Your Name All Rights Reserved</p>