Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Men's singles | Women's singles | Men's doubles | Women's doubles | Mixed doubles |
| --- | --- | --- | --- | --- | --- |
| 1995 | Shen Yifeng | Yu Yu Wang | Plamen Peev Tzvetozar Kolev | Andrea Dako Adrienn Kocsis | Zhou Yifeng Yu Yu Wang |
| 1996 1998 | No competition | No competition | No competition | No competition | No competition |
| 1999 | Salim | Zeng Yaqiong | Ian Sullivan Anthony Clark | Yamada Hiromi Murakami Naomi | Ian Sullivan Han Jingna |
| 2000 | No competition | No competition | No competition | No competition | No competition |
| 2001 | Yong Ying Li | Agnese Allegrini | Franklin Wahab Arnd Vetters | Kathrin Hoffmann Jessica Willems | Franklin Wahab Jessica Willems |
| 2002 | Jens Roch | Maria Kazakova | Arturo Ruiz Nicolás Escartín Ara | Verena Fastenbauer Simone Prutsch | Maxim Carpenco Evelin Gridenberg |
| 2003 | Gerben Bruijsten | Agnese Allegrini | Inoki Cahyadi Agus Sugimin | Agnese Allegrini Federica Panini | Jesper Hovgaard Karina Sörensen |
| 2004 | Daniel Damgaard-Pedersen | Maja Tvrdy | Daniel Damgaard-Pedersen Christoffer B. Jensen | Mia Nielsen Line Isberg | Jesper Hovgaard Line Isberg |
| 2005 | Joachim Persson | Tine Rasmussen | Simon Mollyhus Anders Kristiansen | Nina Vislova Valeri Sorokina | Vitalij Durkin Marina Yakusheva |
| 2006 | Jens-Kristian Leth | Sara Persson | Alexander Nikolaenko Vitalij Durkin | Cai Jaini Qi Yu | Peter Buur Steffensen Mette Schjoldager |
| 2007 | Sho Sasaki | Juliane Schenk | Carsten Mogensen Mathias Boe | Anastasia Russkikh Ekaterina Ananina | Alexander Nikolaenko Nina Vislova |
| 2008 | Wong Choong Hann | Juliane Schenk | Kristof Hopp Johannes Schöttler | Valeria Sorokina Nina Vislova | Vitalij Durkin Nina Vislova |
| 2009 | cancelled | cancelled | cancelled | cancelled | cancelled |
| 2010 | Przemysław Wacha | Olga Konon | Anthony Clark Chris Langridge | Selena Piek Iris Tabeling | Chris Adcock Imogen Bankier |
| 2011 | Pablo Abian | Yao Jie | Vladimir Ivanov Ivan Sozonov | Valeria Sorokina Nina Vislova | Alexandr Nikolaenko Valeria Sorokina |
| 2012 | cancelled | cancelled | cancelled | cancelled | cancelled |
Question:
Which women's double took place in 2006?
Answer:
Cai Jaini Qi Yu