62% (1996)

63% (1964)

59% (1994)

50% (1995)

68% (1995)

46% (1968)

60% (1993)

55% (1994)

44% (1989)

37% (1990)

0% (1989)

10% (1993)

53% (1994)

60% (1992)

0% (1989)

53% (1991)

35% (1993)

50% (1992)

75% (1995)

59% (2005)