60% (1977)

65% (2002)

15% (1986)

53% (1981)

49% (1989)

81% (1967)

0% (1969)

68% (2000)

35% (1992)

30% (2009)

55% (1978)

62% (2001)

60% (1995)

80% (1999)

60% (2007)

43% (1981)

44% (1999)

48% (2015)

80% (2008)

60% (1974)