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:
| Season | Team | Country | Competition | Matches | Goals |
| --- | --- | --- | --- | --- | --- |
| 1999 | Djurgårdens IF | Sweden | Allsvenskan | 15 | 1 |
| 2000 | Djurgårdens IF | Sweden | Superettan | 15 | 3 |
| 2001 | Djurgårdens IF | Sweden | Allsvenskan | 22 | 7 |
| 2002–2003 | Grazer AK | Austria | Bundesliga | 24 | 6 |
| 2003 | Denizlispor | Turkey | Süper Lig | 3 | 0 |
| 2003 | Landskrona BoIS | Sweden | Allsvenskan | 11 | 3 |
| 2004 | Landskrona BoIS | Sweden | Allsvenskan | 22 | 4 |
| 2005 | Djurgårdens IF | Sweden | Allsvenskan | 24 | 12 |
| 2006 | Djurgårdens IF | Sweden | Allsvenskan | 17 | 6 |
| 2007 | Djurgårdens IF | Sweden | Allsvenskan | 23 | 4 |
| 2008 | Djurgårdens IF | Sweden | Allsvenskan | 29 | 6 |
| 2008–09 | Esbjerg fB | Denmark | Superliga | 6 | 0 |
| 2010 | AaB | Denmark | Superliga | 3 | 1 |
| 2011 | Assyriska FF | Sweden | Superettan | 19 | 5 |
| Total | Total | Total | Total | 233 | 58 |
Question:
how many teams had above 20 matches in the season?
Answer:
6