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:
World Sudoku Championship
Table title:
Results summary
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=2 > Year </th><th colspan=1 rowspan=2 > Host city </th><th colspan=1 rowspan=2 > Host nation </th><th colspan=3 rowspan=1 > Individual </th><th colspan=3 rowspan=1 > Team </th></tr>
<tr> <th colspan=1 rowspan=1 > Gold </th><th colspan=1 rowspan=1 > Silver </th><th colspan=1 rowspan=1 > Bronze </th><th colspan=1 rowspan=1 > Gold </th><th colspan=1 rowspan=1 > Silver </th><th colspan=1 rowspan=1 > Bronze </th></tr>
<tr> <td colspan=1 rowspan=1 > 2020 </td><td colspan=1 rowspan=1 > Shanghai </td><td colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2019 </td><td colspan=1 rowspan=1 > Kirchheim </td><td colspan=1 rowspan=1 > Germany </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2018 </td><td colspan=1 rowspan=1 > Prague </td><td colspan=1 rowspan=1 > Czech Republic </td><td colspan=1 rowspan=1 > Japan Kota Morinishi </td><td colspan=1 rowspan=1 > France Bastien Vial-Jaime </td><td colspan=1 rowspan=1 > Estonia Tiit Vunk </td><td class="highlighted"  colspan=1 rowspan=1 > Japan </td><td colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > Germany </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > Bangalore </td><td colspan=1 rowspan=1 > India </td><td colspan=1 rowspan=1 > Japan Kota Morinishi </td><td colspan=1 rowspan=1 > Estonia Tiit Vunk </td><td colspan=1 rowspan=1 > China Qiu Yanzhe </td><td class="highlighted"  colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > Japan </td><td colspan=1 rowspan=1 > France </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > Senec </td><td colspan=1 rowspan=1 > Slovakia </td><td colspan=1 rowspan=1 > Estonia Tiit Vunk </td><td colspan=1 rowspan=1 > Czech RepublicJakub Ondroušek </td><td colspan=1 rowspan=1 > Japan Kota Morinishi </td><td class="highlighted"  colspan=1 rowspan=1 > Czech Republic </td><td colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > Japan </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2015 </td><td colspan=1 rowspan=1 > Sofia </td><td colspan=1 rowspan=1 > Bulgaria </td><td colspan=1 rowspan=1 > Japan Kota Morinishi </td><td colspan=1 rowspan=1 > Estonia Tiit Vunk </td><td colspan=1 rowspan=1 > Czech RepublicJakub Ondroušek </td><td class="highlighted"  colspan=1 rowspan=1 > Japan </td><td colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > Czech Republic </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > London </td><td colspan=1 rowspan=1 > United Kingdom </td><td colspan=1 rowspan=1 > Japan Kota Morinishi </td><td colspan=1 rowspan=1 > Estonia Tiit Vunk </td><td colspan=1 rowspan=1 > France Bastien Vial-Jaime Czech RepublicJakub Ondroušek(tied) </td><td class="highlighted"  colspan=1 rowspan=1 > Japan </td><td colspan=1 rowspan=1 > Germany </td><td colspan=1 rowspan=1 > China </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > Beijing </td><td colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > China Jin Ce </td><td colspan=1 rowspan=1 > Japan Kota Morinishi </td><td colspan=1 rowspan=1 > Czech Republic Jakub Ondroušek </td><td class="highlighted"  colspan=1 rowspan=1 > China </td><td colspan=1 rowspan=1 > Czech Republic </td><td colspan=1 rowspan=1 > Japan </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2012 </td><td colspan=1 rowspan=1 > Kraljevica </td><td colspan=1 rowspan=1 > Croatia </td><td colspan=1 rowspan=1 > Poland Jan Mrozowski </td><td colspan=1 rowspan=1 > Japan Kota Morinishi </td><td colspan=1 rowspan=1 > Japan Hideaki Jo </td><td class="highlighted"  colspan=1 rowspan=1 > Japan </td><td colspan=1 rowspan=1 > Czech Republic </td><td colspan=1 rowspan=1 > China </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2011 </td><td colspan=1 rowspan=1 > Eger </td><td colspan=1 rowspan=1 > Hungary </td><td colspan=1 rowspan=1 > United States Thomas Snyder </td><td colspan=1 rowspan=1 > Japan Kota Morinishi </td><td colspan=1 rowspan=1 > Estonia Tiit Vunk </td><td class="highlighted"  colspan=1 rowspan=1 > Germany </td><td colspan=1 rowspan=1 > Czech Republic </td><td colspan=1 rowspan=1 > United States </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > Philadelphia </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > Poland Jan Mrozowski </td><td colspan=1 rowspan=1 > Czech Republic Jakub Ondroušek </td><td colspan=1 rowspan=1 > Japan Hideaki Jo </td><td class="highlighted"  colspan=1 rowspan=1 > Germany </td><td colspan=1 rowspan=1 > Czech Republic </td><td colspan=1 rowspan=1 > Japan </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > Žilina </td><td colspan=1 rowspan=1 > Slovakia </td><td colspan=1 rowspan=1 > Poland Jan Mrozowski </td><td colspan=1 rowspan=1 > Serbia Branko Ceranic </td><td colspan=1 rowspan=1 > Czech Republic Robert Babilon </td><td class="highlighted"  colspan=1 rowspan=1 > Slovakia </td><td colspan=1 rowspan=1 > Czech Republic </td><td colspan=1 rowspan=1 > Serbia </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2008 </td><td colspan=1 rowspan=1 > Goa </td><td colspan=1 rowspan=1 > India </td><td colspan=1 rowspan=1 > United States Thomas Snyder </td><td colspan=1 rowspan=1 > Japan Yuhei Kusui </td><td colspan=1 rowspan=1 > Czech Republic Jakub Ondroušek </td><td class="highlighted"  colspan=1 rowspan=1 > Czech Republic </td><td colspan=1 rowspan=1 > Japan </td><td colspan=1 rowspan=1 > Germany </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2007 </td><td colspan=1 rowspan=1 > Prague </td><td colspan=1 rowspan=1 > Czech Republic </td><td colspan=1 rowspan=1 > United States Thomas Snyder </td><td colspan=1 rowspan=1 > Japan Yuhei Kusui </td><td colspan=1 rowspan=1 > Slovakia Peter Hudak </td><td class="highlighted"  colspan=1 rowspan=1 > Japan </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > Czech Republic </td></tr>
<tr> <td colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 > Lucca </td><td colspan=1 rowspan=1 > Italy </td><td colspan=1 rowspan=1 > Czech Republic Jana Tylova </td><td colspan=1 rowspan=1 > United States Thomas Snyder </td><td colspan=1 rowspan=1 > United States Wei-Hwa Huang </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
Who is the most successful team in the World Sudoku Championship? 
Answer:
Japan is the most successful team, having won the World Sudoku Championship title in 2007, 2012, 2014, 2015 and 2018; Czech Republic (2008, 2016), Germany (2010 and 2011) and China (2013, 2017) have won twice; Slovakia (2009) also won a title.