67% (1997)

80% (2015)

60% (1992)

0% (1995)

25% (1985)

54% (1994)

52% (1989)

68% (2001)

57% (1992)

0% (1991)

0% (1990)

50% (1985)

42% (1983)

48% (2002)

61% (2004)

59% (1966)

52% (1994)

50% (2004)

35% (1971)

64% (1997)