59% (1992)

50% (1998)

54% (1999)

61% (1997)

53% (1989)

49% (1996)

52% (1994)

62% (1989)

52% (2002)

45% (1996)

63% (1989)

54% (1994)

46% (2000)

65% (1990)

55% (2003)

63% (1994)

56% (2004)

0% (2026)