Average annual expenditures for gasoline and motor oil, all consumer units, 1984-2000 Year Annual expenditures 1984 $1,058 1985 $1,035 1986 $915 1987 $888 1988 $932 1989 $985 1990 $1,047 1991 $995 1992 $973 1993 $977 1994 $986 1995 $1,006 1996 $1,082 1997 $1,098 1998 $1,017 1999 $1,055 2000 $1,291