Publication Year

• 1977 (1,562)
• 1981 (1,365)
• 1984 (1,336)
• 1980 (1,319)
• 1988 (1,246)
• 1989 (1,209)
• 1976 (1,208)
• 1979 (1,183)
• 1985 (1,179)
• 1987 (1,162)
• 1982 (1,139)
• 1986 (1,039)
• 1978 (981)
• 1991 (953)
• 1993 (944)
• 1975 (884)
• 1983 (788)
• 1990 (680)
• 1967 (608)
• 1998 (588)