75% (1988)

54% (1988)

57% (1985)

57% (1975)

0% (2009)

65% (2002)

71% (2012)

67% (1977)

50% (1975)

70% (1997)

73% (1989)

60% (1998)

51% (1975)

61% (2008)

54% (1987)

54% (1993)

73% (1989)

78% (1989)

55% (1998)

50% (1992)