44% (2000)

61% (2003)

60% (1992)

60% (2001)

50% (1998)

55% (1995)

50% (1993)

49% (2001)

53% (2001)

42% (1999)

52% (1997)

46% (1987)

55% (1999)

62% (1995)

61% (1990)

42% (1996)