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 |
| --- | --- | --- | --- | --- |
| 1989 | European Indoor Championships | The Hague, Netherlands | 10th |  |
| 1989 | World Indoor Championships | Budapest, Hungary | 9th |  |
| 1991 | World Indoor Championships | Lisbon, Portugal | 6th |  |
| 1991 | World Championships | Tokyo, Japan | 5th | 5.75 m NR |
| 1992 | European Indoor Championships | Genoa, Italy | 5th |  |
| 1993 | World Championships | Stuttgart, Germany | 11th |  |
Question:
how many championships did he compete in?
Answer:
6