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:
Kjersti Plätzer
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 Norway </th></tr>
<tr> <td colspan=1 rowspan=2 > 1986 </td><td colspan=1 rowspan=1 > World Junior Championships </td><td colspan=1 rowspan=1 > Athens, Greece </td><td colspan=1 rowspan=1 > 5th </td><td colspan=1 rowspan=1 > 5000m </td><td colspan=1 rowspan=1 > 23:09.99 </td></tr>
<tr> <td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Stuttgart, West Germany </td><td colspan=1 rowspan=1 > 11th </td><td colspan=1 rowspan=1 > 10 km </td><td colspan=1 rowspan=1 > 48:28 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1987 </td><td colspan=1 rowspan=1 > World Race Walking Cup </td><td colspan=1 rowspan=1 > New York City, United States </td><td colspan=1 rowspan=1 > 17th </td><td colspan=1 rowspan=1 > 10 km </td><td colspan=1 rowspan=1 > 46:28 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1994 </td><td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Helsinki, Finland </td><td colspan=1 rowspan=1 > 16th </td><td colspan=1 rowspan=1 > 10 km </td><td colspan=1 rowspan=1 > 46:10 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1998 </td><td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Budapest, Hungary </td><td colspan=1 rowspan=1 > 9th </td><td colspan=1 rowspan=1 > 10 km </td><td colspan=1 rowspan=1 > 43:49 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1999 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Seville, Spain </td><td colspan=1 rowspan=1 > 9th </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:32:42 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2000 </td><td colspan=1 rowspan=1 > European Race Walking Cup </td><td colspan=1 rowspan=1 > Eisenhüttenstadt, Germany </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:27:53 </td></tr>
<tr> <td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Sydney, Australia </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:29:33 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2001 </td><td colspan=1 rowspan=1 > European Race Walking Cup </td><td colspan=1 rowspan=1 > Dudince, Slovakia </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > DNF </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Edmonton, Canada </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > DSQ </td></tr>
<tr> <td colspan=1 rowspan=1 > 2002 </td><td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Munich, Germany </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > DSQ </td></tr>
<tr> <td colspan=1 rowspan=1 > 2003 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Paris, France </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > DSQ </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2004 </td><td class="highlighted"  colspan=1 rowspan=1 > Olympic Games </td><td class="highlighted"  colspan=1 rowspan=1 > Athens, Greece </td><td class="highlighted"  colspan=1 rowspan=1 > 12th </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:30:49 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Gothenburg, Sweden </td><td colspan=1 rowspan=1 > 4th </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:28:45 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2007 </td><td class="highlighted"  colspan=1 rowspan=1 > World Championships </td><td class="highlighted"  colspan=1 rowspan=1 > Osaka, Japan </td><td class="highlighted"  colspan=1 rowspan=1 > 4th </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:31:24 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2008 </td><td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Beijing, China </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:27:07 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Berlin, Germany </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > DSQ </td></tr>
</table>
Question:
How successful was Kjersti Plätzer in 2004 and 2007?
Answer:
Kjersti Plätzer finished 12th in the 2004 Olympic Games in Athens and 4th in the 2007 World Championships in Osaka.