40% (1993)

80% (1990)

66% (1995)

57% (1988)

35% (2007)

40% (1994)

60% (2006)

61% (1978)

55% (1991)

30% (2006)

20% (2002)

66% (2002)

20% (1989)

54% (2001)

30% (2000)

67% (1979)

0% (1998)

10% (1990)

67% (1983)

60% (2004)