66% (1993)

69% (1994)

60% (1997)

68% (1994)

63% (2006)

71% (1993)

73% (1997)

72% (1996)

69% (1996)

70% (1997)

68% (1996)

66% (1994)

67% (2008)

71% (1997)

0% (2008)