Year	Number
1978	1200
1979	1200
1980	1200
1981	1200
1982	1200
1983	1200
1984	1200
1985	1200
1986	1200
1987	1200
1988	1200
1989	1200
1990	1200
1991	1200
1992	1200
1993	1200
1994	1200
1995	1200
1996	1200
1997	1200
1998	1200