82% (1995)

68% (1999)

66% (1997)

53% (2004)

67% (1998)

65% (1996)

70% (1993)

68% (1999)

66% (1997)

60% (2000)

64% (2005)

67% (1994)

0% (1995)

76% (2005)

67% (2008)

62% (1994)

41% (2001)

68% (2000)

50% (2010)

74% (2001)