100% (2002)

75% (1995)

53% (2003)

75% (2002)

78% (1991)

67% (2002)

71% (1995)

68% (2008)

50% (1997)

85% (1996)

68% (2007)

66% (2007)

60% (2003)

66% (1999)

61% (2006)

68% (1995)

62% (1992)

65% (2003)

66% (2001)

70% (2004)