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:
Unity City Academy
Table title:
Academic standards
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 >  </th><th colspan=1 rowspan=1 > 2011 </th><th colspan=1 rowspan=1 > 2012 </th><th colspan=1 rowspan=1 > 2013 </th><th class="highlighted"  colspan=1 rowspan=1 > 2014 </th><th class="highlighted"  colspan=1 rowspan=1 > 2015 </th><th class="highlighted"  colspan=1 rowspan=1 > 2016 </th></tr>
<tr> <td colspan=1 rowspan=1 > National maintained school results </td><td colspan=1 rowspan=1 > 59% </td><td colspan=1 rowspan=1 > 59% </td><td colspan=1 rowspan=1 > 60% </td><td colspan=1 rowspan=1 > 57% </td><td colspan=1 rowspan=1 > 56% </td><td colspan=1 rowspan=1 > 59% </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Unity City Academy results </td><td colspan=1 rowspan=1 > 25% </td><td colspan=1 rowspan=1 > 48% </td><td colspan=1 rowspan=1 > 34% </td><td class="highlighted"  colspan=1 rowspan=1 > 34% </td><td class="highlighted"  colspan=1 rowspan=1 > 26% </td><td class="highlighted"  colspan=1 rowspan=1 > 19% </td></tr>
</table>
Question:
How did the Unity City Academy exam results change each year from 2014 to 2016?
Answer:
The exam results continued to decline by 34% (2014),26% (2015) and 19% (2016).