Edit in JSFiddle

<h2>Non Autowidth Table</h2>

<table>
    <tr>
        <td>1</td>
        <td width="100%">Mr. John Doe </td>
        <td>United States of America</td>
        <td>2014</td>
    </tr>
    <tr>
        <td>2</td>
        <td width="100%">Mr. Paul Jones</td>
        <td>New Zealand</td>
        <td>2013</td>
    </tr>
</table>

<h2>Autowidth Table</h2>

<table class="autowidth">
    <tr>
        <td>1</td>
        <td width="100%">Mr. John Doe </td>
        <td>United States of America</td>
        <td>2014</td>
    </tr>
    <tr>
        <td>2</td>
        <td width="100%">Mr. Paul Jones</td>
        <td>New Zealand</td>
        <td>2013</td>
    </tr>
</table>

body{
    font: 14px sans-serif;
}
table{
    width:300px;
    font: 16px sans-serif;
    border-collapse: collapse;
}
td{
    border: 1px solid #ccc;
    padding: 5px 10px;
}
table.autowidth td{
    white-space:nowrap;
}