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:
Robert Kipkoech Cheruiyot
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 Kenya </th></tr>
<tr> <td colspan=1 rowspan=2 > 2001 </td><td colspan=1 rowspan=1 > Rotterdam Marathon </td><td colspan=1 rowspan=1 > Rotterdam, Netherlands </td><td colspan=1 rowspan=1 > 10th </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:10:41 </td></tr>
<tr> <td colspan=1 rowspan=1 > Reims Marathon </td><td colspan=1 rowspan=1 > Reims, France </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:13:17 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2002 </td><td colspan=1 rowspan=1 > Milan Marathon </td><td colspan=1 rowspan=1 > Milan, Italy </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:08:59 </td></tr>
<tr> <td colspan=1 rowspan=1 > Paris Marathon </td><td colspan=1 rowspan=1 > Paris, France </td><td colspan=1 rowspan=1 > 4th </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:09:39 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2003 </td><td class="highlighted"  colspan=1 rowspan=1 > Boston Marathon </td><td colspan=1 rowspan=1 > Boston, United States </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:10:11 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2006 </td><td class="highlighted"  colspan=1 rowspan=1 > Boston Marathon </td><td colspan=1 rowspan=1 > Boston, United States </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:07:14 </td></tr>
<tr> <td colspan=1 rowspan=1 > Chicago Marathon </td><td colspan=1 rowspan=1 > Chicago, United States </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:07:35 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2007 </td><td class="highlighted"  colspan=1 rowspan=1 > Boston Marathon </td><td colspan=1 rowspan=1 > Boston, United States </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:14:13 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2008 </td><td class="highlighted"  colspan=1 rowspan=1 > Boston Marathon </td><td colspan=1 rowspan=1 > Boston, United States </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Marathon </td><td colspan=1 rowspan=1 > 2:07:45 </td></tr>
</table>
Question:
How many times did Robert Kipkoech Cheruiyot win the Boston Marathon, and what years did the wins occur?
Answer:
Robert Kipkoech Cheruiyot won the Boston Marathon in 2003, 2006, 2007, and 2008.