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:
Bradford Literature Festival
Table title:
Events
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Attendance </th><th colspan=1 rowspan=1 > No of events </th><th colspan=1 rowspan=1 > Notable people </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2014 </td><td class="highlighted"  colspan=1 rowspan=1 > 968 </td><td colspan=1 rowspan=1 > 24 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 15–24 May 2015 </td><td colspan=1 rowspan=1 > 11,000 </td><td colspan=1 rowspan=1 > 150 </td><td colspan=1 rowspan=1 > Shabnam Khan, Brian Patten, Sukina Owen-Douglas </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 20–29 May 2016 </td><td colspan=1 rowspan=1 > 32,000 </td><td colspan=1 rowspan=1 > 200 </td><td colspan=1 rowspan=1 > Carol Anne Duffy, Nadiya Hussain, Baroness Sayeeda Warsi </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 30 June–9 July 2017 </td><td class="highlighted"  colspan=1 rowspan=1 > 50,0000 </td><td colspan=1 rowspan=1 > 300 </td><td colspan=1 rowspan=1 > Jeanette Winterson, Joanna Trollope, Linton Kwesi Johnson, Germaine Greer </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 29 June–8 July 2018 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 400 </td><td colspan=1 rowspan=1 > Frank Bruno, Suzi Quatro, Kate Bush </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
When was Bradford Literature Festival's first event held, how many people attended it and by which year event did 50,000 people attend the Festival?
Answer:
Bradford Literature Festival's first event was held in 2014 and was attended by 968 people and by the time of the 2017 event, the attendance had risen to 50,000.