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:
Rawhide (TV series)
Table title:
Home media
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > DVD name </th><th colspan=1 rowspan=1 > Ep No. </th><th colspan=1 rowspan=1 > Region 1 </th><th colspan=1 rowspan=1 > Region 2 (UK) </th><th colspan=1 rowspan=1 > Region 2 (Scandinavia) </th><th colspan=1 rowspan=1 > Region 4 </th></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 1 </th><td colspan=1 rowspan=1 > 22 </td><td colspan=1 rowspan=1 > July 25, 2006 </td><td colspan=1 rowspan=1 > November 15, 2010 </td><td colspan=1 rowspan=1 > October 28, 2009January 13, 2010 </td><td colspan=1 rowspan=1 > January 20, 2010 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 2, Volume 1 </th><td colspan=1 rowspan=1 > 16 </td><td colspan=1 rowspan=1 > May 29, 2007 </td><td colspan=1 rowspan=2 > April 11, 2011 </td><td colspan=1 rowspan=1 > September 22, 2010 </td><td colspan=1 rowspan=2 > March 9, 2010 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 2, Volume 2 </th><td colspan=1 rowspan=1 > 16 </td><td colspan=1 rowspan=1 > December 18, 2007 </td><td colspan=1 rowspan=1 > September 22, 2010 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 3, Volume 1 </th><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 > May 27, 2008 </td><td colspan=1 rowspan=2 > July 11, 2011 </td><td colspan=1 rowspan=1 > September 28, 2011January 11, 2012 </td><td colspan=1 rowspan=2 > August 11, 2010 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 3, Volume 2 </th><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 > December 9, 2008 </td><td colspan=1 rowspan=1 > February 15, 2012August 29, 2012 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 4, Volume 1 </th><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 > June 7, 2011 </td><td colspan=1 rowspan=2 > June 6, 2016 </td><td colspan=1 rowspan=9 > Seasons 4–8, not to be released </td><td colspan=1 rowspan=2 > September 27, 2010 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 4, Volume 2 </th><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 > November 1, 2011 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 5, Volume 1 </th><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=2 > September 18, 2012 </td><td colspan=1 rowspan=2 > September 5, 2016 </td><td colspan=1 rowspan=2 > February 2, 2011 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 5, Volume 2 </th><td colspan=1 rowspan=1 > 14 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 6, Volume 1 </th><td colspan=1 rowspan=1 > 16 </td><td colspan=1 rowspan=2 > June 4, 2013 </td><td colspan=1 rowspan=1 > TBA </td><td colspan=1 rowspan=2 > May 2, 2011 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 6, Volume 2 </th><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 > TBA </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 7, Volume 1 </th><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=2 > March 4, 2014 </td><td colspan=1 rowspan=1 > TBA </td><td colspan=1 rowspan=2 > August 3, 2011 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 7, Volume 2 </th><td colspan=1 rowspan=1 > 15 </td><td colspan=1 rowspan=1 > TBA </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > Season 8 </th><td colspan=1 rowspan=1 > 13 </td><td colspan=1 rowspan=1 > June 3, 2014 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=1 rowspan=1 > The Complete Series </th><td colspan=1 rowspan=1 > 217 </td><td colspan=1 rowspan=1 > May 12, 2015 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
How many seasons did Rawhide air for?
Answer:
Rawhide aired for eight seasons.