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:
Gale Harold
Table title:
TV shows
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 2000–2005 </td><td colspan=1 rowspan=1 > Queer as Folk </td><td colspan=1 rowspan=1 > Brian Kinney </td><td colspan=1 rowspan=1 > Main cast; 83 episodes (Seasons 1-5; 2000–2005) </td></tr>
<tr> <td colspan=1 rowspan=2 > 2003 </td><td colspan=1 rowspan=1 > Street Time </td><td colspan=1 rowspan=1 > Geoff Beddoes </td><td colspan=1 rowspan=1 > Episode 2.08: Gone Episode 2.09: Get Up, Stand Up </td></tr>
<tr> <td colspan=1 rowspan=1 > Law & Order: Special Victims Unit </td><td colspan=1 rowspan=1 > Dr. Garrett Lang </td><td colspan=1 rowspan=1 > Episode 4.24: "Perfect" </td></tr>
<tr> <td colspan=1 rowspan=2 > 2005 </td><td colspan=1 rowspan=1 > Fathers and Sons </td><td colspan=1 rowspan=1 > Elliott </td><td colspan=1 rowspan=1 > Made-for-television film </td></tr>
<tr> <td colspan=1 rowspan=1 > Martha: Behind Bars </td><td colspan=1 rowspan=1 > Peter Bacanovic </td><td colspan=1 rowspan=1 > Made-for-television film </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=3 > 2006 </td><td colspan=1 rowspan=1 > The Unit </td><td colspan=1 rowspan=1 > Rory </td><td colspan=1 rowspan=1 > Episode 1.07: "Dedication" Episode 1.10: "Unannounced" </td></tr>
<tr> <td colspan=1 rowspan=1 > Deadwood </td><td colspan=1 rowspan=1 > Wyatt Earp </td><td colspan=1 rowspan=1 > Episode 3.08: "Leviathan Smiles" Episode 3.09: "Amateur Night" </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Vanished </td><td class="highlighted"  colspan=1 rowspan=1 > Agent Graham Kelton </td><td class="highlighted"  colspan=1 rowspan=1 > Main cast (Episodes 1-7) 8 episodes </td></tr>
<tr> <td colspan=1 rowspan=1 > 2007 </td><td colspan=1 rowspan=1 > Grey's Anatomy </td><td colspan=1 rowspan=1 > Shane </td><td colspan=1 rowspan=1 > Episode 4.09: "Crash Into Me, Part 1" Episode 4.10: "Crash Into Me, Part 2" </td></tr>
<tr> <td colspan=1 rowspan=1 > 2008–2009 </td><td colspan=1 rowspan=1 > Desperate Housewives </td><td colspan=1 rowspan=1 > Jackson Braddock </td><td colspan=1 rowspan=1 > 14 episodes (4.17, 5.01, 5.02, 5.03, 5.04, 5.05, 5.06, 5.07, 5.08, 5.11 (voice), 5.12 (voice), 5.21, 5.22 & 5.23) </td></tr>
<tr> <td colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > CSI: NY </td><td colspan=1 rowspan=1 > Kevin Scott </td><td colspan=1 rowspan=1 > Episode 6.22: "Point of View" </td></tr>
<tr> <td colspan=1 rowspan=1 > 2010–2011 </td><td colspan=1 rowspan=1 > Hellcats </td><td colspan=1 rowspan=1 > Julian Parrish </td><td colspan=1 rowspan=1 > 9 episodes (1.03, 1.05, 1.06, 1.10, 1.13, 1.15, 1.19, 1.20 & 1.21) </td></tr>
<tr> <td colspan=1 rowspan=1 > 2011-2012 </td><td colspan=1 rowspan=1 > The Secret Circle </td><td colspan=1 rowspan=1 > Charles Mead </td><td colspan=1 rowspan=1 > Main cast - Harold didn't appear in 6 episodes (1.04, 1.07, 1.11, 1.14, 1.16 & 1.18) </td></tr>
<tr> <td colspan=1 rowspan=1 > 2013-2014 </td><td colspan=1 rowspan=1 > Defiance </td><td colspan=1 rowspan=1 > Connor Lang </td><td colspan=1 rowspan=1 > Episodes: 1.06, 1.08, 1.09 & 2.05 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2018 </td><td colspan=1 rowspan=1 > Criminal Minds </td><td colspan=1 rowspan=1 > Dr. Daryl Wright </td><td colspan=1 rowspan=1 > Episode: 14.09: "Broken Wing" </td></tr>
</table>
Question:
What year did Harold appear in 8 episodes as Agent Graham Kelton in Vanished?
Answer:
In 2006, Harold appeared in 8 episodes as Agent Graham Kelton in Vanished.