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 Location | Mens Singles | Womens Singles | Mens Doubles | Womens Doubles |
| --- | --- | --- | --- | --- |
| 2011 Stockholm | Ma Long | Guo Yan | Wang Liqin Yan An | Guo Yan Guo Yue |
| 2007 Stockholm | Wang Hao | Li Xiaoxia | Ma Long Wang Hao | Kim Kyung-Ah Park Mi-Young |
| 2005 Gothenburg | Timo Boll | Cao Zhen | Oh Sang-Eun Lee Jung-Woo | Tie Ya Na Zhang Rui |
| 2003 Malmö | Wang Liqin | Zhang Yining | Wang Hao Ma Lin | Guo Yue Niu Jianfeng |
| 2001 Skovde | Wang Liqin | Guo Yan | Wang Liqin Yan Sen | Bai Yang Yang Ying |
| 2000 Umeå | Liu Guozheng | Zhang Yining | Liu Guozheng Ma Lin | Bai Yang Niu Jianfeng |
| 1999 Karlskrona | Wang Liqin | Sun Jin | Patrick Chila Jean-Philippe Gatien | Sun Jin Yang Ying |
| 1998 Sundsvall | Damien Eloi | Qianhong Gotsch-He | Ma Lin Qin Zhijian | Lin Ling Sun Jin |
| 1997 Kalmar | Vladimir Samsonov | Wang Hui | Lucjan Blaszczyk Tomasz Krzeszewski | Kim Moo-Kyo Park Hae-Jung |
Question:
How many times has Ma Long won the men's singles?
Answer:
1.0