54% (1992)

69% (1998)

80% (1993)

70% (1975)

72% (1993)

78% (1972)

65% (1999)

69% (1996)

67% (1992)

51% (2002)

80% (1974)

81% (1971)

73% (1982)

73% (1995)

29% (2002)

79% (1989)

75% (2000)

75% (1959)

60% (2002)

70% (2003)