Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Chassis | Engine | Tyres | Points |
| --- | --- | --- | --- | --- |
| 1987.0 | Dallara 3087 | Cosworth V8 | A | 0.0 |
| 1988.0 | Dallara 3087 Lola T88/50 | Cosworth V8 | A | 0.0 |
| 1989.0 | Lola T89/50 | Cosworth V8 | A | 7.0 |
| 1990.0 | Lola T90/50 | Cosworth V8 | A | 20.0 |
| 1991.0 | Lola T91/50 Reynard 91D | Cosworth V8 | A | 43.0 |
| 1992.0 | Reynard 92D | Cosworth V8 | A | 44.0 |
| 1993.0 | Reynard 93D | Cosworth V8 | A | 20.0 |
| 1994.0 | Reynard 94D | Cosworth V8 | A | 9.0 |
Question:
Name the year for points less than 20 and chassis of dallara 3087
Answer:
1987.0