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:
Cara Theobold
Table title:
Television
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year(s) </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 > 2012–2013 </td><td colspan=1 rowspan=1 > Downton Abbey </td><td colspan=1 rowspan=1 > Ivy Stuart </td><td colspan=1 rowspan=1 > Main role </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > Lovesick </td><td colspan=1 rowspan=1 > Ilona McLeod </td><td colspan=1 rowspan=1 > Guest role </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2015 </td><td class="highlighted"  colspan=1 rowspan=1 > Last Tango in Halifax </td><td class="highlighted"  colspan=1 rowspan=1 > Holly </td><td colspan=1 rowspan=1 > Guest role </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2015 </td><td class="highlighted"  colspan=1 rowspan=1 > Call the Midwife </td><td colspan=1 rowspan=1 > Marie Amos </td><td colspan=1 rowspan=1 > Guest role </td></tr>
<tr> <td colspan=1 rowspan=1 > 2015 </td><td colspan=1 rowspan=1 > The Syndicate </td><td colspan=1 rowspan=1 > Sarah </td><td colspan=1 rowspan=1 > Main role </td></tr>
<tr> <td colspan=1 rowspan=1 > 2015 </td><td colspan=1 rowspan=1 > Together </td><td colspan=1 rowspan=1 > Ellen </td><td colspan=1 rowspan=1 > Main role </td></tr>
<tr> <td colspan=1 rowspan=1 > 2015 </td><td colspan=1 rowspan=1 > Harry Price Ghosthunter </td><td colspan=1 rowspan=1 > Sarah Grey (Housemaid) </td><td colspan=1 rowspan=1 > Main role </td></tr>
<tr> <td colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > Crazyhead </td><td colspan=1 rowspan=1 > Amy </td><td colspan=1 rowspan=1 > Main role </td></tr>
<tr> <td colspan=1 rowspan=1 > 2017–present </td><td colspan=1 rowspan=1 > Absentia </td><td colspan=1 rowspan=1 > Alice Durand </td><td colspan=1 rowspan=1 > Main role </td></tr>
<tr> <td colspan=1 rowspan=1 > 2019 </td><td colspan=1 rowspan=1 > Kiri </td><td colspan=1 rowspan=1 > Lucy </td><td colspan=1 rowspan=1 > Guest role </td></tr>
<tr> <td colspan=1 rowspan=1 > 2019 </td><td colspan=1 rowspan=1 > Manhunt </td><td colspan=1 rowspan=1 > Laura Marsh </td><td colspan=1 rowspan=1 > Main Role </td></tr>
</table>
Question:
What year did Cara Theobold appear in Last Tango in Halifax as Holly and Call the Midwife?
Answer:
In 2015, Cara Theobold appeared in Last Tango in Halifax as Holly, and Call the Midwife.