45% (2004)

59% (2000)

72% (1994)

55% (1998)

75% (1993)

68% (1997)

70% (2004)

65% (1996)

61% (1990)

71% (2003)

66% (1997)

49% (2002)

54% (1995)

49% (2001)

69% (2001)

59% (2006)

76% (2001)

69% (1991)

42% (2003)

63% (2006)