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:
Jamaica National League
Table title:
Teams
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Team </th><th colspan=1 rowspan=1 > Formed </th><th colspan=1 rowspan=1 > Suburb </th><th colspan=1 rowspan=1 > City </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Constabulary Knights </td><td class="highlighted"  colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 > Kencot </td><td colspan=1 rowspan=1 > Kingston </td></tr>
<tr> <td colspan=1 rowspan=1 > Duhaney Park Sharks </td><td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > Duhaney Park </td><td colspan=1 rowspan=1 > Kingston </td></tr>
<tr> <td colspan=1 rowspan=1 > JDF Warriors </td><td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > Kencot </td><td colspan=1 rowspan=1 > Kingston </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Montego Bay Cobras </td><td class="highlighted"  colspan=1 rowspan=1 > 2008 </td><td colspan=1 rowspan=1 > Irwin </td><td colspan=1 rowspan=1 > Montego Bay </td></tr>
<tr> <td colspan=1 rowspan=1 > Olympic Angels </td><td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > Olympic Gardens </td><td colspan=1 rowspan=1 > Kingston </td></tr>
<tr> <td colspan=1 rowspan=1 > Vauxhall Vultures </td><td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > Bournemouth Gardens </td><td colspan=1 rowspan=1 > Kingston </td></tr>
</table>
Question:
Who Joined the Jamaica National League in the 2006 and 2008 seasons?
Answer:
The Constabulary Knights and the Montego Bay Cobras are the teams that joined for the 2006 and 2008 season.