61% (2014)

47% (2008)

77% (2002)

69% (2004)

62% (1995)

62% (1994)

53% (1992)

55% (1997)

46% (1996)

28% (2004)

44% (1995)

64% (1997)

61% (1997)

56% (1992)

51% (1998)

27% (1989)

52% (1997)

40% (1990)

55% (1996)

54% (1995)