How to Append DropdownList Items from Code?

Hi To all again!
 I have a dropdown list with items I've written this way:
<asp:DropDownList ID="Year" runat="server" Style="position: relative" Width="124px"
                    AutoPostBack="true">
                    <asp:ListItem Selected="True" Value="0">--Select year--</asp:ListItem>
                    <asp:ListItem Value="2009" ...