54% (1996)

66% (2006)

37% (1992)

68% (1993)

66% (2001)

61% (2007)

57% (1993)

53% (2004)

57% (1986)

55% (1993)

49% (1989)

65% (1990)

48% (1984)

56% (1998)

0% (2004)

56% (1992)

44% (1987)

53% (1992)

60% (2006)

77% (2020)