• 1976 to 1977 1
• 1978 to 1979 0
• 1980 to 1981 1
• 1982 to 1983 1
• 1984 to 1985 3
• 1986 to 1987 2
• 1988 to 1989 2
• 1990 to 1991 5
• 1992 to 1993 3
• 1994 to 1995 1