|Year|Author|Illustrator|Title|Publisher|
|---|---|---|---|---|
|1982|Angela Carter (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: how many titles did walker publish?
Answer: 6