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:
| Outcome | Year | Championship | Surface | Opponent | Score |
| --- | --- | --- | --- | --- | --- |
| Runner-up | 1996.0 | Rome | Clay | Thomas Muster | 2–6, 4–6, 6–3, 3–6 |
| Runner-up | 1997.0 | Stuttgart | Carpet | Petr Korda | 6–7 (6–8) , 2–6, 4–6 |
| Runner-up | 1998.0 | Canada (Toronto) | Hard | Patrick Rafter | 6–7 (3–7) , 4–6 |
| Winner | 1998.0 | Stuttgart | Carpet | Yevgeny Kafelnikov | 6–4, 6–3, 6–3 |
| Winner | 1999.0 | Key Biscayne | Hard | Sébastien Grosjean | 4–6, 6–1, 6–2, 7–5 |
| Runner-up | 1999.0 | Stuttgart | Carpet | Thomas Enqvist | 1–6, 4–6, 7–5, 5–7 |
Question:
What was the surface in 1996?
Answer:
Clay