62% (1989)

61% (2001)

58% (1988)

58% (2000)

58% (1990)

42% (2002)

51% (1992)

64% (1984)

54% (1994)

60% (1990)

56% (1991)

55% (1988)

43% (2012)

52% (1988)

49% (1986)

52% (1993)

0% (2005)

72% (1996)

59% (1992)

52% (2005)