39% (2001)

35% (2003)

60% (1997)

72% (1989)

65% (1984)

56% (1983)

50% (2005)

70% (1995)

59% (1985)

63% (1983)

53% (1985)

59% (1984)

61% (1999)

45% (1992)

52% (1993)

60% (2012)

60% (1982)

60% (1983)

42% (1992)

64% (1992)