63% (1995)

62% (1991)

60% (1996)

58% (1995)

64% (2002)

58% (1998)

62% (1999)

58% (2002)

52% (1990)

30% (1991)

67% (1989)

30% (1992)

58% (1997)

43% (1996)

61% (1996)

25% (1992)

0% (1970)

40% (1992)

36% (1988)

54% (1992)