40% (1998)

62% (1998)

62% (2001)

54% (2000)

62% (1998)

68% (1996)

61% (1995)

52% (1999)

63% (2001)

59% (2001)

37% (1997)

48% (1995)

60% (1998)

44% (1992)

61% (2000)

37% (1994)

46% (1995)

46% (1999)

73% (1999)

35% (1998)