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 | Author | Illustrator | Title | Publisher |
| --- | --- | --- | --- | --- |
| 1982 | Angela Carter\n(ed. and translator) | Michael Foreman | Sleeping Beauty and other favourite fairy tales | V. Gollancz |
| 1983 | Anthony Browne | Browne | Gorilla | Julia MacRae |
| 1984 | John Burningham | Burningham | Granpa | J. Cape |
| 1985 | Ted Hughes (1968) | Andrew Davidson | The Iron Man | Faber |
| 1986 | Allan Ahlberg | Janet Ahlberg | The Jolly Postman | Heinemann |
| 1987 | Charles Causley | Charles Keeping | Jack the Treacle Eater | Macmillan |
| 1988 | Lewis Carroll (1865) | Anthony Browne | Alice's Adventures in Wonderland | Julia MacRae |
| 1989 | Martin Waddell | Barbara Firth | The Park in the Dark | Walker |
| 1990 | Quentin Blake | Blake | All Join In | J. Cape |
| 1991 | Colin McNaughton | McNaughton | Have You Seen who's just moved in next door to us? | Walker |
| 1992 | Raymond Briggs | Briggs | The Man | Julia MacRae |
| 1993 | Karen Wallace | Mike Bostock | Think of an Eel | Walker |
| 1994 | Trish Cooke | Helen Oxenbury | So Much | Walker |
| 1995 | Kathy Henderson | Patrick Benson | The Little Boat | Walker |
| 1996 | Babette Cole | Cole | Drop Dead | J. Cape |
| 1997 | William Mayne | Jonathan Heale | Lady Muck | Heinemann |
| 1998 | Anthony Browne | Browne | Voices in the Park | Doubleday |
| 1999 | Lewis Carroll (1865) | Helen Oxenbury | Alice's Adventures in Wonderland | Walker |
Question:
which illustrator was responsible for the last award winner?
Answer:
Helen Oxenbury