Simple:

<p>Copyright &copy; <script>document.write(new Date().getFullYear())</script> Your Name All Rights Reserved</p>
  
  
Date range:

<p> Copyright &copy; 2014-<script>document.write(new Date().getFullYear())</script> Your Name All Rights Reserved</p>
  

Center copyright notice:

<p style="text-align: center"> Copyright &copy; 2014-<script>document.write(new Date().getFullYear())</script> Your Name All Rights Reserved</p>