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:
Cor Vriend
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 the Netherlands </th></tr>
<tr> <td colspan=1 rowspan=1 > 1980 </td><td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Moscow, Soviet Union </td><td colspan=1 rowspan=1 > 41st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:26:41 </td></tr>
<tr> <td colspan=1 rowspan=2 > 1981 </td><td colspan=1 rowspan=1 > Enschede Marathon </td><td colspan=1 rowspan=1 > Enschede, Netherlands </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:15:54 </td></tr>
<tr> <td colspan=1 rowspan=1 > Fukuoka Marathon </td><td colspan=1 rowspan=1 > Fukuoka, Japan </td><td colspan=1 rowspan=1 > 13th </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:14:25 </td></tr>
<tr> <td colspan=1 rowspan=2 > 1982 </td><td class="highlighted"  colspan=1 rowspan=1 > Amsterdam Marathon </td><td colspan=1 rowspan=1 > Amsterdam, Netherlands </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:12:15 </td></tr>
<tr> <td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Athens, Greece </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > DNF </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1983 </td><td class="highlighted"  colspan=1 rowspan=1 > Amsterdam Marathon </td><td colspan=1 rowspan=1 > Amsterdam, Netherlands </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:13:41 </td></tr>
<tr> <td colspan=1 rowspan=2 > 1984 </td><td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Los Angeles, United States </td><td colspan=1 rowspan=1 > 39th </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:21:08 </td></tr>
<tr> <td colspan=1 rowspan=1 > Beppu-Ōita Marathon </td><td colspan=1 rowspan=1 > Beppu-Ōita, Japan </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:12:05 </td></tr>
</table>
Question:
How many times did Cor Vriend win the Amsterdam Marathon, and which year did he win his second? 
Answer:
Vriend twice won the Amsterdam Marathon (once in 1983).