75% (2004)

75% (2006)

73% (2008)

80% (1993)

73% (2009)

71% (1994)

72% (2008)

72% (1994)

60% (2010)

76% (2009)

56% (2001)

62% (2008)

75% (1999)

70% (1998)

0% (1991)

60% (2000)

61% (2004)

66% (1992)

0% (1993)

85% (1999)