60% (1985)

45% (2000)

55% (2000)

35% (1988)

67% (1979)

70% (1995)

60% (2002)

0% (1980)

10% (1989)

0% (1985)

69% (2005)

0% (2008)

0% (1995)

73% (2008)

61% (2000)

70% (2000)

85% (1985)

60% (1992)

60% (1981)

59% (2008)