54% (2000)

45% (2005)

0% (1958)

39% (1992)

69% (1979)

60% (1990)

85% (1997)

10% (1995)

44% (1991)

73% (2006)

45% (1993)

66% (1983)

58% (1986)

64% (2001)

50% (1995)

68% (2005)

0% (1993)

61% (2009)

40% (1992)

62% (1999)