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 | Mens singles | Womens singles | Mens doubles | Womens doubles | Mixed doubles |
| --- | --- | --- | --- | --- | --- |
| 2012.0 | Chen Long | Li Xuerui | Mathias Boe Carsten Mogensen | Wang Xiaoli Yu Yang | Joachim Fischer Nielsen Christinna Pedersen |
| 2011.0 | Lin Dan | Wang Yihan | Mathias Boe Carsten Mogensen | Wang Xiaoli Yu Yang | Zhang Nan Zhao Yunlei |
| 2010.0 | Lee Chong Wei | Wang Shixian | Mathias Boe Carsten Mogensen | Wang Xiaoli Yu Yang | Zhang Nan Zhao Yunlei |
| 2009.0 | Lee Chong Wei | Wong Mew Choo | Jung Jae-sung Lee Yong-dae | Wong Pei Tty Chin Eei Hui | Joachim Fischer Nielsen Christinna Pedersen |
| 2008.0 | Lee Chong Wei | Zhou Mi | Koo Kien Keat Tan Boon Heong | Wong Pei Tty Chin Eei Hui | Thomas Laybourn Kamilla Rytter Juhl |
Question:
state the earliest year li xuerui won womens singles
Answer:
2012.0