62% (2001)

62% (1998)

52% (1999)

61% (1995)

63% (1998)

53% (2000)

58% (2001)

62% (2000)

63% (2001)

68% (1996)

44% (1992)

0% (2002)

49% (1989)

67% (2000)

49% (1995)

73% (1999)

39% (1997)

39% (1994)

43% (1998)

50% (1999)