46% (1993)

59% (1994)

60% (1996)

67% (1995)

63% (1995)

49% (1999)

67% (1991)

66% (1997)

60% (1996)

67% (1996)

55% (1996)

65% (1999)

49% (1993)

57% (2001)

56% (1993)

59% (1993)

44% (1994)

68% (1992)

54% (2001)

66% (1991)