CONTACT US: Contact info
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| 1 (1981) | 1 | ? | 4 | ? |
| 2 (1982) | 1 | 2 | 1 | ? |
| 3 (1983) | 2 | 2 | ? | ? |
| 4 (1984) | 1 | 1 | 2 | ? |
| 5 (1985) | 1 | ? | 1 | ? |
| 6 (1986) | ? | ? | 1 | ? |
| 7 (1987) | 1 | ? | 1 | ? |
| 8 (1988) | 1 | ? | ? | ? |
| 10 (1990) | ? | ? | 2 | ? |
| 11 (1991) | 2 | 2 | 1 | ? |
| 12 (1992) | 3 | 2 | ? | ? |
| 14 (1994) | 1 | 2 | 2 | ? |
| 15 (1995) | ? | 1 | ? | ? |
| 16 (1996) | 1 | ? | 1 | ? |
| 17 (1997) | ? | 1 | 1 | ? |
| 18 (1998) | ? | ? | ? | 2 |
| 19 (1999) | ? | ? | 2 | 1 |
| 20 (2000) | 2 | ? | 2 | 2 |
| 21 (2001) | ? | 1 | 1 | 1 |
| 22 (2002) | ? | ? | 1 | 1 |
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