To include the following years: 1979 (2); 1980 (3); 1981 (7); 1982 (9); 1984 (5); 1985 (3); 1988 (5); 1989 (5); 1990 (4); 1992 (3); 1993 (3); 1995 (4); 1997 (2); 1998 (5).