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:
Jörg Peter
Table title:
Achievements
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Competition </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Position </th><th colspan=1 rowspan=1 > Event </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <th colspan=6 rowspan=1 > Representing East Germany </th></tr>
<tr> <td colspan=1 rowspan=1 > 1977 </td><td colspan=1 rowspan=1 > IAAF World Cup </td><td colspan=1 rowspan=1 > Düsseldorf, West Germany </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 10,000 m </td><td colspan=1 rowspan=1 > 28:34.00 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1978 </td><td colspan=1 rowspan=1 > European Indoor Championships </td><td colspan=1 rowspan=1 > Milan, Italy </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > 3000 m </td><td colspan=1 rowspan=1 > 7:50.1 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1980 </td><td colspan=1 rowspan=1 > Summer Olympics </td><td colspan=1 rowspan=1 > Moscow, Soviet Union </td><td colspan=1 rowspan=1 > 6th </td><td colspan=1 rowspan=1 > 10,000 m </td><td colspan=1 rowspan=1 > 28:05.5 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1985 </td><td colspan=1 rowspan=1 > Leipzig Marathon </td><td colspan=1 rowspan=1 > Leipzig, East Germany </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:12:32 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1986 </td><td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Stuttgart, West Germany </td><td colspan=1 rowspan=1 > 17th </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:18:05 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1987 </td><td colspan=1 rowspan=1 > Košice Peace Marathon </td><td colspan=1 rowspan=1 > Košice, Czechoslovakia </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:14:59 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1988 </td><td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Seoul, South Korea </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > DNF </td></tr>
<tr> <td colspan=1 rowspan=1 > 1989 </td><td colspan=1 rowspan=1 > Leipzig Marathon </td><td colspan=1 rowspan=1 > Leipzig, East Germany </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:31:38 </td></tr>
<tr> <th colspan=6 rowspan=1 > Representing Germany </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1990 </td><td class="highlighted"  colspan=1 rowspan=1 > Hamburg Marathon </td><td colspan=1 rowspan=1 > Hamburg, West Germany </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:11:49 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 1991 </td><td class="highlighted"  colspan=1 rowspan=1 > Hamburg Marathon </td><td colspan=1 rowspan=1 > Hamburg, Germany </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:10:43 </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Tokyo, Japan </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > DNF </td></tr>
</table>
Question:
What did Jörg Peter in Hamburg and during which two years?
Answer:
In 1990 and 1991 Jörg Peter won the Hamburg Marathon.