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:
Fink (singer)
Table title:
Singles
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=2 > Title </th><th colspan=1 rowspan=2 > Year </th><th colspan=3 rowspan=1 > Peak chart positions </th><th colspan=1 rowspan=2 > Album </th></tr>
<tr> <th colspan=1 rowspan=1 > UK Indie </th><th colspan=1 rowspan=1 > UK Indie Break. </th><th colspan=1 rowspan=1 > NED </th></tr>
<tr> <th colspan=1 rowspan=1 > "Pretty Little Thing" </th><td colspan=1 rowspan=2 > 2006 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=2 > Biscuits for Breakfast </td></tr>
<tr> <th colspan=1 rowspan=1 > "So Long" </th><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td></tr>
<tr> <th colspan=1 rowspan=1 > "This Is the Thing" </th><td colspan=1 rowspan=1 > 2007 </td><td colspan=1 rowspan=1 > 34 </td><td colspan=1 rowspan=1 > 18 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > Distance and Time </td></tr>
<tr> <th colspan=1 rowspan=1 > "Yesterday Was Hard on All of Us" </th><td class="highlighted"  colspan=1 rowspan=2 > 2011 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=2 > Perfect Darkness </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > "Perfect Darkness" </th><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td></tr>
<tr> <th colspan=1 rowspan=1 > "Looking Too Closely" </th><td colspan=1 rowspan=2 > 2014 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > 89 </td><td colspan=1 rowspan=2 > Hard Believer </td></tr>
<tr> <th colspan=1 rowspan=1 > "Shakespeare" </th><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td></tr>
<tr> <th colspan=1 rowspan=1 > "Cracks Appear" </th><td colspan=1 rowspan=2 > 2017 </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=2 > Resurgam </td></tr>
<tr> <th colspan=1 rowspan=1 > "Not Everything Was Better in the Past" </th><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td><td colspan=1 rowspan=1 > — </td></tr>
</table>
Question:
In what year did did Fink release the track Perfect Darkness? 
Answer:
In 2011, the track "Perfect Darkness" was released.