CONTACT US: Contact info
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| 1 (1983) | 1 | ? | 1 | 1 |
| 2 (1984) | 1 | 1 | ? | 1 |
| 3 (1985) | 1 | 1 | 1 | ? |
| 4 (1986) | ? | 1 | 2 | 1 |
| 5 (1987) | 1 | 2 | 1 | 2 |
| 6 (1988) | 1 | 2 | 3 | ? |
| 7 (1989) | ? | 1 | ? | 2 |
| 8 (1990) | 1 | 1 | 1 | 2 |
| 9 (1991) | 2 | 2 | 3 | 2 |
| 10 (1992) | 1 | 1 | 1 | 5 |
| 11 (1993) | ? | 3 | 1 | 1 |
| 13 (1995) | 1 | 1 | 1 | ? |
| 14 (1996) | 1 | 1 | ? | 4 |
| 15 (1997) | 2 | ? | 1 | ? |
| 16 (1998) | 1 | 1 | 2 | ? |
| 17 (1999) | ? | 2 | ? | ? |
| 18 (2000) | 2 | 1 | ? | ? |
| 19 (2001) | ? | 1 | 1 | 3 |
| 20 (2002) | 1 | 1 | ? | 2 |
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