79% (2000)

64% (1995)

72% (2000)

72% (2000)

75% (1996)

71% (1991)

43% (2005)

70% (1999)

52% (1997)

61% (1993)

56% (1993)

72% (1989)

60% (1994)

62% (1993)

50% (1994)

71% (1998)

56% (1993)

59% (1993)

59% (1994)

67% (2000)