68% (2002)

57% (2000)

58% (1995)

60% (1986)

48% (1994)

44% (1998)

63% (1990)

61% (1990)

85% (1990)

0% (1989)

62% (1994)

61% (1986)

71% (1999)

80% (1986)

44% (1988)

62% (1986)

56% (2008)

70% (2003)

46% (1987)

67% (1987)