47% (1989)

48% (2005)

67% (1996)

63% (2005)

44% (1994)

65% (1995)

47% (1992)

53% (1992)

31% (1995)

56% (1992)

71% (1974)

47% (1999)

64% (2008)

62% (1993)

56% (1998)

0% (1970)

51% (1994)

53% (1997)

39% (1993)

65% (1977)