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 | Competition | Venue | Position | Notes |
| --- | --- | --- | --- | --- |
| 1999.0 | World Race Walking Cup | Mézidon-Canon , France | 55th | 20km |
| 2002.0 | World Race Walking Cup | Turin, Italy | 29th | 50km |
| 2002.0 | Commonwealth Games | Manchester , England | 2nd | 20km |
| 2003.0 | World Championships | Paris, France | 5th | 20 km |
| 2004.0 | Olympic Games | Athens , Greece | 16th | 20 km |
| 2004.0 | World Race Walking Cup | Naumburg , Germany | 14th | 20km |
| 2005.0 | World Championships | Helsinki , Finland | 10th | 20 km |
| 2006.0 | Commonwealth Games | Melbourne , Australia | 2nd | 20km |
| 2006.0 | World Race Walking Cup | La Coruña , Spain | 18th | 20km |
| 2007.0 | World Championships | Osaka , Japan | 7th | 20 km |
| 2008.0 | Olympic Games | Beijing , PR China | 6th | 20 km |
| 2009.0 | World Championships | Berlin, Germany | 18th | 20 km |
| 2009.0 | World Championships | Berlin, Germany | 6th | 50 km |
| 2010.0 | World Race Walking Cup | Chihuahua, Mexico | DNF | 50km |
| 2010.0 | Commonwealth Games | Delhi , India | 2nd | 20km |
| 2012.0 | Olympic Games | London , United Kingdom | 27th | 50 km |
Question:
How many years have had the position of 2nd?
Answer:
3.0