Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Purdue Boilermakers football
Table title:
Conference championships
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Season </th><th colspan=1 rowspan=1 > Coach </th><th colspan=1 rowspan=1 > Conference </th><th colspan=1 rowspan=1 > Record </th><th colspan=1 rowspan=1 > Conference Record </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1891 </td><td colspan=1 rowspan=1 > Knowlton Ames </td><td colspan=1 rowspan=1 > IIAA </td><td class="highlighted"  colspan=1 rowspan=1 > 4–0 </td><td colspan=1 rowspan=1 > 4–0 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1892 </td><td colspan=1 rowspan=1 > Knowlton Ames </td><td colspan=1 rowspan=1 > IIAA </td><td class="highlighted"  colspan=1 rowspan=1 > 8–0 </td><td colspan=1 rowspan=1 > 4–0 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1893 </td><td colspan=1 rowspan=1 > D.M. Balliet </td><td colspan=1 rowspan=1 > IIAA </td><td colspan=1 rowspan=1 > 5–2–1 </td><td colspan=1 rowspan=1 > 4–0 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1894 </td><td colspan=1 rowspan=1 > D.M. Balliet </td><td colspan=1 rowspan=1 > IIAA </td><td colspan=1 rowspan=1 > 9–1 </td><td colspan=1 rowspan=1 > 4–0 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1918† </td><td colspan=1 rowspan=1 > A. G. Scanlon </td><td colspan=1 rowspan=1 > Big Ten Conference </td><td colspan=1 rowspan=1 > 3–3 </td><td colspan=1 rowspan=1 > 1–0 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1929 </td><td colspan=1 rowspan=1 > James Phelan </td><td colspan=1 rowspan=1 > Big Ten Conference </td><td class="highlighted"  colspan=1 rowspan=1 > 8–0 </td><td colspan=1 rowspan=1 > 5–0 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1931† </td><td colspan=1 rowspan=1 > Noble Kizer </td><td colspan=1 rowspan=1 > Big Ten Conference </td><td colspan=1 rowspan=1 > 9–1 </td><td colspan=1 rowspan=1 > 5–1 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1932† </td><td colspan=1 rowspan=1 > Noble Kizer </td><td colspan=1 rowspan=1 > Big Ten Conference </td><td class="highlighted"  colspan=1 rowspan=1 > 7–0–1 </td><td colspan=1 rowspan=1 > 5–0–1 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1943† </td><td colspan=1 rowspan=1 > Elmer Burnham </td><td colspan=1 rowspan=1 > Big Ten Conference </td><td class="highlighted"  colspan=1 rowspan=1 > 9–0 </td><td colspan=1 rowspan=1 > 6–0 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1952† </td><td colspan=1 rowspan=1 > Stu Holcomb </td><td colspan=1 rowspan=1 > Big Ten Conference </td><td colspan=1 rowspan=1 > 4–3–1 </td><td colspan=1 rowspan=1 > 4–1–1 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1967† </td><td colspan=1 rowspan=1 > Jack Mollenkopf </td><td colspan=1 rowspan=1 > Big Ten Conference </td><td colspan=1 rowspan=1 > 8–2 </td><td colspan=1 rowspan=1 > 6–1 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2000† </td><td colspan=1 rowspan=1 > Joe Tiller </td><td colspan=1 rowspan=1 > Big Ten Conference </td><td colspan=1 rowspan=1 > 8–4 </td><td colspan=1 rowspan=1 > 6–2 </td></tr>
</table>
Question:
In which years and with what records did Purdue have unbeaten seasons?
Answer:
Purdue had five unbeaten seasons, going 4–0 in 1891, 8–0 in 1892, 8–0 in 1929, 7–0–1 in 1932 and 9–0 in 1943.