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:
2015 New Zealand NBL season
Table title:
Team information
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Team </th><th colspan=1 rowspan=1 > City </th><th colspan=1 rowspan=1 > Arena </th><th colspan=1 rowspan=1 > Head Coach </th><th colspan=1 rowspan=1 > Import </th><th colspan=1 rowspan=1 > Import </th></tr>
<tr> <td colspan=1 rowspan=1 > Canterbury Rams </td><td colspan=1 rowspan=1 > Christchurch </td><td colspan=1 rowspan=1 > Cowles Stadium </td><td colspan=1 rowspan=1 > New Zealand Mark Dickel </td><td colspan=1 rowspan=1 > United States Mickell Gladness </td><td colspan=1 rowspan=1 > United States Jermaine Taylor </td></tr>
<tr> <td colspan=1 rowspan=1 > Hawke's Bay Hawks </td><td colspan=1 rowspan=1 > Napier </td><td colspan=1 rowspan=1 > Pettigrew Green Arena </td><td colspan=1 rowspan=1 > New Zealand Paora Winitana </td><td colspan=1 rowspan=1 > United States Zack Atkinson </td><td colspan=1 rowspan=1 > Nigeria Suleiman Braimoh </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Manawatu Jets </td><td colspan=1 rowspan=1 > Palmerston North </td><td colspan=1 rowspan=1 > Arena Manawatu </td><td colspan=1 rowspan=1 > New Zealand Darron Larsen </td><td colspan=1 rowspan=1 > United States Dion Harris </td><td colspan=1 rowspan=1 > United States Brandon Jenkins </td></tr>
<tr> <td colspan=1 rowspan=1 > Nelson Giants </td><td colspan=1 rowspan=1 > Nelson </td><td colspan=1 rowspan=1 > Saxton Stadium </td><td colspan=1 rowspan=1 > United States Tim Fanning </td><td colspan=1 rowspan=1 > United States McKenzie Moore </td><td colspan=1 rowspan=1 > United States DeRonn Scott </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Southland Sharks </td><td class="highlighted"  colspan=1 rowspan=1 > Invercargill </td><td class="highlighted"  colspan=1 rowspan=1 > Stadium Southland </td><td colspan=1 rowspan=1 > New Zealand Paul Henare </td><td colspan=1 rowspan=1 > Australia Todd Blanchfield </td><td colspan=1 rowspan=1 > United States Kevin Braswell </td></tr>
<tr> <td colspan=1 rowspan=1 > Super City Rangers </td><td colspan=1 rowspan=1 > Auckland </td><td colspan=1 rowspan=1 > Otara Recreation Centre </td><td colspan=1 rowspan=1 > New Zealand Jeff Green </td><td colspan=1 rowspan=1 > Australia Jason Cadee </td><td colspan=1 rowspan=1 > Australia Tom Garlepp </td></tr>
<tr> <td colspan=1 rowspan=1 > Taranaki Mountainairs </td><td colspan=1 rowspan=1 > New Plymouth </td><td colspan=1 rowspan=1 > TSB Stadium </td><td colspan=1 rowspan=1 > New Zealand Daryn Shaw </td><td colspan=1 rowspan=1 > United States Aaron Fuller </td><td colspan=1 rowspan=1 > United States Chris Hagan </td></tr>
<tr> <td colspan=1 rowspan=1 > Wellington Saints </td><td colspan=1 rowspan=1 > Wellington </td><td colspan=1 rowspan=1 > TSB Bank Arena </td><td colspan=1 rowspan=1 > New Zealand Pero Cameron </td><td colspan=1 rowspan=1 > United States Torrey Craig </td><td colspan=1 rowspan=1 > Australia Daniel Johnson </td></tr>
</table>
Question:
How many teams participated in the 2015 New Zealand NBL Season?
Answer:
The 2015 New Zealand NBL season had 8 teams in the league.