50% (2003)

61% (2000)

0% (1989)

66% (1992)

60% (2000)

65% (2008)

62% (1986)

69% (1991)

40% (1988)

0% (1978)

85% (1981)

73% (1991)

0% (1986)

73% (1989)

70% (1998)

60% (2000)

62% (1959)

61% (1959)

67% (1984)

0% (1993)