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:
List of world number one snooker players
Table title:
Periods
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > No. </th><th colspan=1 rowspan=1 > Nationality </th><th colspan=1 rowspan=1 > Player </th><th colspan=1 rowspan=1 > From </th><th colspan=1 rowspan=1 > To </th></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > Wales </td><td colspan=1 rowspan=1 > Ray Reardon </td><td colspan=1 rowspan=1 > 3 May 1975 </td><td colspan=1 rowspan=1 > 20 April 1981 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > Canada </td><td colspan=1 rowspan=1 > Cliff Thorburn </td><td colspan=1 rowspan=1 > 21 April 1981 </td><td colspan=1 rowspan=1 > 16 May 1982 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Wales </td><td colspan=1 rowspan=1 > Ray Reardon (2) </td><td colspan=1 rowspan=1 > 17 May 1982 </td><td colspan=1 rowspan=1 > 2 May 1983 </td></tr>
<tr> <td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Steve Davis </td><td colspan=1 rowspan=1 > 3 May 1983 </td><td colspan=1 rowspan=1 > 29 April 1990 </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > Scotland </td><td colspan=1 rowspan=1 > Stephen Hendry </td><td class="highlighted"  colspan=1 rowspan=1 > 30 April 1990 </td><td class="highlighted"  colspan=1 rowspan=1 > 4 May 1998 </td></tr>
<tr> <td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > Scotland </td><td colspan=1 rowspan=1 > John Higgins </td><td colspan=1 rowspan=1 > 5 May 1998 </td><td colspan=1 rowspan=1 > 1 May 2000 </td></tr>
<tr> <td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > Wales </td><td colspan=1 rowspan=1 > Mark Williams </td><td colspan=1 rowspan=1 > 2 May 2000 </td><td colspan=1 rowspan=1 > 6 May 2002 </td></tr>
<tr> <td colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Ronnie O'Sullivan </td><td colspan=1 rowspan=1 > 7 May 2002 </td><td colspan=1 rowspan=1 > 5 May 2003 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Wales </td><td colspan=1 rowspan=1 > Mark Williams (2) </td><td colspan=1 rowspan=1 > 6 May 2003 </td><td colspan=1 rowspan=1 > 3 May 2004 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Ronnie O'Sullivan (2) </td><td colspan=1 rowspan=1 > 4 May 2004 </td><td colspan=1 rowspan=1 > 1 May 2006 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Scotland </td><td colspan=1 rowspan=1 > Stephen Hendry (2) </td><td class="highlighted"  colspan=1 rowspan=1 > 2 May 2006 </td><td class="highlighted"  colspan=1 rowspan=1 > 7 May 2007 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Scotland </td><td colspan=1 rowspan=1 > John Higgins (2) </td><td colspan=1 rowspan=1 > 8 May 2007 </td><td colspan=1 rowspan=1 > 5 May 2008 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Ronnie O'Sullivan (3) </td><td colspan=1 rowspan=1 > 6 May 2008 </td><td colspan=1 rowspan=1 > 3 May 2010 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Scotland </td><td colspan=1 rowspan=1 > John Higgins (3) </td><td colspan=1 rowspan=1 > 4 May 2010 </td><td colspan=1 rowspan=1 > 26 September 2010 </td></tr>
<tr> <td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > Australia </td><td colspan=1 rowspan=1 > Neil Robertson </td><td colspan=1 rowspan=1 > 27 September 2010 </td><td colspan=1 rowspan=1 > 12 December 2010 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Scotland </td><td colspan=1 rowspan=1 > John Higgins (4) </td><td colspan=1 rowspan=1 > 13 December 2010 </td><td colspan=1 rowspan=1 > 2 May 2011 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Wales </td><td colspan=1 rowspan=1 > Mark Williams (3) </td><td colspan=1 rowspan=1 > 3 May 2011 </td><td colspan=1 rowspan=1 > 11 September 2011 </td></tr>
<tr> <td colspan=1 rowspan=1 > 9 </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Mark Selby </td><td colspan=1 rowspan=1 > 12 September 2011 </td><td colspan=1 rowspan=1 > 4 November 2012 </td></tr>
<tr> <td colspan=1 rowspan=1 > 10 </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Judd Trump </td><td colspan=1 rowspan=1 > 5 November 2012 </td><td colspan=1 rowspan=1 > 9 December 2012 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Mark Selby (2) </td><td colspan=1 rowspan=1 > 10 December 2012 </td><td colspan=1 rowspan=1 > 17 February 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Judd Trump (2) </td><td colspan=1 rowspan=1 > 18 February 2013 </td><td colspan=1 rowspan=1 > 31 March 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Mark Selby (3) </td><td colspan=1 rowspan=1 > 1 April 2013 </td><td colspan=1 rowspan=1 > 9 June 2013 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Australia </td><td colspan=1 rowspan=1 > Neil Robertson (2) </td><td colspan=1 rowspan=1 > 10 June 2013 </td><td colspan=1 rowspan=1 > 5 May 2014 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Mark Selby (4) </td><td colspan=1 rowspan=1 > 6 May 2014 </td><td colspan=1 rowspan=1 > 6 July 2014 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Australia </td><td colspan=1 rowspan=1 > Neil Robertson (3) </td><td colspan=1 rowspan=1 > 7 July 2014 </td><td colspan=1 rowspan=1 > 10 August 2014 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Mark Selby (5) </td><td colspan=1 rowspan=1 > 11 August 2014 </td><td colspan=1 rowspan=1 > 7 December 2014 </td></tr>
<tr> <td colspan=1 rowspan=1 > 11 </td><td colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > Ding Junhui </td><td colspan=1 rowspan=1 > 8 December 2014 </td><td colspan=1 rowspan=1 > 14 December 2014 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Australia </td><td colspan=1 rowspan=1 > Neil Robertson (4) </td><td colspan=1 rowspan=1 > 15 December 2014 </td><td colspan=1 rowspan=1 > 24 January 2015 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > Ding Junhui (2) </td><td colspan=1 rowspan=1 > 25 January 2015 </td><td colspan=1 rowspan=1 > 8 February 2015 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Mark Selby (6) </td><td colspan=1 rowspan=1 > 9 February 2015 </td><td colspan=1 rowspan=1 > 24 March 2019 </td></tr>
<tr> <td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > England </td><td colspan=1 rowspan=1 > Ronnie O'Sullivan (4) </td><td colspan=1 rowspan=1 > 25 March 2019 </td><td colspan=1 rowspan=1 > Present </td></tr>
</table>
Question:
When was Stephen Hendry ranked world number one (and for how many seasons and were they consecutive or not) and did he ever reach number one again?
Answer:
Stephen Hendry was ranked world number one for eight consecutive seasons between 1990 and 1998, and regained the top ranking position for the 2006/2007 season.