57% (1990)

60% (1985)

73% (2013)

55% (1992)

64% (1989)

66% (2003)

50% (1992)

67% (2003)

62% (1986)

76% (2007)

58% (1983)

85% (2000)

72% (2012)

85% (1986)

62% (2008)

55% (1985)

37% (2005)

0% (1993)

66% (1995)

70% (1981)