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:
Rugby union in the United States
Table title:
Rugby on TV
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Competition </th><th colspan=1 rowspan=1 > Network </th><th colspan=1 rowspan=1 > TV since </th></tr>
<tr> <td colspan=1 rowspan=1 > CRC Sevens </td><td colspan=1 rowspan=1 > NBC & NBCSN </td><td colspan=1 rowspan=1 > 2010 </td></tr>
<tr> <td colspan=1 rowspan=1 > USA Sevens </td><td colspan=1 rowspan=1 > NBC & NBCSN </td><td colspan=1 rowspan=1 > 2011 </td></tr>
<tr> <td colspan=1 rowspan=1 > Rugby World Cup </td><td colspan=1 rowspan=1 > NBC & NBCSN </td><td colspan=1 rowspan=1 > 2011 </td></tr>
<tr> <td colspan=1 rowspan=1 > Varsity Cup </td><td colspan=1 rowspan=1 > NBCSN </td><td colspan=1 rowspan=1 > 2014 </td></tr>
<tr> <td colspan=1 rowspan=1 > Americas Rugby Championship </td><td colspan=1 rowspan=1 > ESPN2 </td><td colspan=1 rowspan=1 > 2016 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Premiership Rugby </td><td class="highlighted"  colspan=1 rowspan=1 > NBC Sports Group </td><td class="highlighted"  colspan=1 rowspan=1 > 2016 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Six Nations Rugby </td><td class="highlighted"  colspan=1 rowspan=1 > NBC & NBCSN </td><td class="highlighted"  colspan=1 rowspan=1 > 2018 </td></tr>
</table>
Question:
What did the NBC Sports Group broadcast since 2016?
Answer:
NBC Sports Group has broadcast matches from Premiership Rugby since 2016.