Table:
text: Forti
Complete International Formula 3000 results
Complete International Formula 3000 results
Year_ Chassis Engine Tyres Points
1987 Dallara 3087 Cosworth V8 A 0
1988 Dallara 3087 Lola T88/50 Cosworth V8 A 0
1989 Lola T89/50 Cosworth V8 A 7
1990 Lola T90/50 Cosworth V8 A 20
1991 Lola T91/50 Reynard 91D Cosworth V8 A 43
1992 Reynard 92D Cosworth V8 A 44
1993 Reynard 93D Cosworth V8 A 20
1994 Reynard 94D Cosworth V8 A 9

Question: Give the average points for dallara 3087 lola t88/50 and year before 1988 among Forti's full international formula 3000 results?

Question: Give the sum of points for 1992 for Fortis Complete International Formula 3000 results?

Question: Give the points for the year after 1987 for Fortis Complete International Formula 3000 results?

Question: Name the year for less than 20 points and chassis of dallara 3087 under Fortis Complete International Formula 3000 results?