53% (2003)

68% (2002)

78% (1991)

69% (1999)

68% (2008)

0% (1994)

66% (1999)

70% (1991)

70% (2004)

61% (2006)

75% (1995)

75% (2002)

60% (1990)

68% (2007)

72% (2006)

60% (2003)

66% (2003)

61% (1992)

65% (2004)

71% (2000)