60% (2000)

68% (1994)

50% (1992)

42% (1991)

73% (1991)

78% (2000)

50% (2001)

66% (2014)

35% (1990)

69% (1986)

50% (2003)

55% (1993)

53% (1992)

70% (1986)

68% (1992)

40% (1997)

70% (1987)

54% (1998)

20% (1999)

63% (2001)