65% (1995)

56% (1999)

64% (1984)

73% (1987)

55% (2002)

57% (1996)

61% (2002)

60% (1997)

60% (2001)

63% (1993)

67% (1981)

65% (1986)

70% (1983)

65% (1992)

64% (1983)

66% (2001)

0% (1990)

53% (1999)

30% (2000)

65% (1984)