46% (2004)

55% (1998)

60% (2000)

72% (1994)

75% (1999)

68% (1997)

54% (1995)

69% (2001)

63% (2006)

65% (1990)

75% (1993)

67% (2003)

0% (1998)

47% (2004)

59% (2006)

67% (1997)

73% (2003)

66% (2001)

60% (1999)

45% (2001)