69% (1998)

73% (1997)

47% (1995)

70% (1996)

56% (2002)

67% (2000)

43% (2001)

50% (1999)

60% (1997)

68% (1995)

57% (1998)

0% (1998)

0% (2002)

61% (1998)

10% (2000)

74% (2003)

80% (1976)

73% (2003)

70% (2004)

0% (2001)