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:
Porsche Carrera Cup Australia Championship
Table title:
Champions
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Season </th><th colspan=1 rowspan=1 > Champion </th><th colspan=1 rowspan=1 > Car </th></tr>
<tr> <th colspan=3 rowspan=1 > Australian Carrera Cup Championship </th></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > 2003 </th><td colspan=1 rowspan=1 > New Zealand Jim Richards </td><td class="highlighted"  colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 996 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > 2004 </th><td colspan=1 rowspan=1 > Australia Alex Davison </td><td class="highlighted"  colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 996 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > 2005 </th><td colspan=1 rowspan=1 > New Zealand Fabian Coulthard </td><td class="highlighted"  colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 996 </td></tr>
<tr> <th class="highlighted"  colspan=1 rowspan=1 > 2006 </th><td colspan=1 rowspan=1 > New Zealand Craig Baird </td><td class="highlighted"  colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 997 </td></tr>
<tr> <th colspan=1 rowspan=1 > 2007 </th><td colspan=1 rowspan=1 > Australia David Reynolds </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 997 </td></tr>
<tr> <th colspan=1 rowspan=1 > 2008 </th><td colspan=1 rowspan=1 > New Zealand Craig Baird </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 997 </td></tr>
<tr> <th colspan=1 rowspan=1 > 2009 2010 </th><td colspan=4 rowspan=1 > not held </td></tr>
<tr> <th colspan=1 rowspan=1 > 2011 </th><td colspan=1 rowspan=1 > New Zealand Craig Baird </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 997 </td></tr>
<tr> <th colspan=1 rowspan=1 > 2012 </th><td colspan=1 rowspan=1 > New Zealand Craig Baird </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 997 </td></tr>
<tr> <th colspan=1 rowspan=1 > 2013 </th><td colspan=1 rowspan=1 > New Zealand Craig Baird </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 997 </td></tr>
<tr> <th colspan=1 rowspan=1 > 2014 </th><td colspan=1 rowspan=1 > New Zealand Steven Richards </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 991 </td></tr>
<tr> <th colspan=1 rowspan=1 > 2015 </th><td colspan=1 rowspan=1 > Australia Nick Foster </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 991 </td></tr>
<tr> <th colspan=3 rowspan=1 > Porsche Carrera Cup Australia </th></tr>
<tr> <th colspan=1 rowspan=1 > 2016 </th><td colspan=1 rowspan=1 > Australia Matt Campbell </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 991 </td></tr>
<tr> <th colspan=1 rowspan=1 > 2017 </th><td colspan=1 rowspan=1 > Australia David Wall </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 991 </td></tr>
<tr> <th colspan=1 rowspan=1 > 2018 </th><td colspan=1 rowspan=1 > New Zealand Jaxon Evans </td><td colspan=1 rowspan=1 > Porsche 911 GT3 Cup Type 991.II </td></tr>
</table>
Question:
When did the Porsche 911 GT3 Cup (Type 997) start being used and what was the model before it?
Answer:
In the Porsche Carrera Cup Australia Championship, the Porsche 911 GT3 Cup (Type 996) was used from 2003 to 2005 and the Porsche 911 GT3 Cup (Type 997) from 2006.