69% (1998)

60% (1997)

67% (2000)

47% (1995)

70% (1996)

56% (2002)

50% (2001)

57% (1998)

61% (1998)

74% (2003)

73% (1997)

68% (1995)

0% (2002)

35% (2002)

73% (2003)

80% (1976)

10% (2000)

0% (2001)

0% (1998)

50% (1999)