66% (2005)

48% (1991)

47% (2002)

48% (1990)

41% (1999)

43% (1998)

61% (1991)

53% (1992)

43% (2000)

38% (1987)

0% (1996)

40% (2002)

70% (1994)

35% (2005)

50% (1985)

42% (1988)