Number In A Repeater

I have a repeater that pulls back informtion from a MySQL database. I was wondering how could I put a counter that increments as each row is returned and displays it in the repeater. For example where it says Day:, I want to make that Day: 1, Day: 2 etc as each row is returned.

The Day: 1++ is just a demonstration of what i want incremented.

<asp:Repeater ID="RepeaterUserReportSummary" runat="server">
<ItemTemplate>
<table style="width: 990px">
<tr>
<td style="width: 185px;height: 10px;"><b>Day: 1++ </b></td>
<td style="width: 35px;height: 10px;"><b>Total:</b><%# Eval("TotalReport")%>cal</td>
</tr>
</table>
</ItemTemplate>
</asp:Repeater>