55% (1999)

70% (2000)

60% (1985)

35% (1988)

40% (2000)

50% (1992)

61% (2000)

85% (1985)

73% (2008)

55% (2000)

32% (1987)

59% (2008)

55% (1981)

53% (1988)

0% (1985)

55% (2006)

50% (2001)

10% (1989)

47% (1990)

90% (2007)