TITLE: Key facts a summary of transportation information for Washington State

Department of Transportation

Issues:

December 1987
December 1988
December 1990
August 1991
June 1992
September 1993
April 1994
January 1995
August 1995
January 1996
July 1996
January 1997
July 1997
January 1998
January 1999
January 2000
January 2001
2002
2003-2006 not published
2007