49% (1992)

58% (1999)

69% (1986)

62% (1987)

54% (1995)

72% (2009)

64% (1970)

68% (1991)

73% (2001)

50% (1996)

50% (2011)

59% (2000)

20% (1999)

45% (2001)

100% (2000)

0% (1970)