lobby	2005	2004	2003	2002	2001	2000	1999	museum cafe
1976	main hall plaza main hall							1998
1977								1997
1978								1996
1979								1995
1980								1994
1981								1993
1982								1992
1983								1991
museum shop	1984	1985	1986	1987	1988	1989	1990	restrooms