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 | Division | League | Regular Season | Playoffs | Open Cup |
| --- | --- | --- | --- | --- | --- |
| 2006 | 4 | USL PDL | 5th, Northwest | Did not qualify | Did not qualify |
| 2007 | 4 | USL PDL | 2nd, Northwest | Conference Semifinals | Did not qualify |
| 2008 | 4 | USL PDL | 1st, Northwest | Conference Finals | Did not qualify |
| 2009 | 4 | USL PDL | 7th, Northwest | Did not qualify | Did not qualify |
| 2010 | 4 | USL PDL | 3rd, Northwest | Did not qualify | Did not qualify |
| 2011 | 4 | USL PDL | 8th, Northwest | Did not qualify | Did not qualify |
| 2012 | 4 | USL PDL | 1st, Northwest | Semifinals | Did not qualify |
| 2013 | 4 | USL PDL | 4th, Northwest | Did not qualify | 2nd Round |
Question:
what is the only year that the seattle sounders qualified for the open cup?
Answer:
2013