60% (2001)

48% (1991)

60% (1997)

36% (1995)

57% (2000)

51% (1996)

50% (1993)

54% (1999)

54% (2002)

54% (1997)

66% (2000)

50% (1993)

50% (1991)

53% (1998)

58% (1998)

54% (1995)

51% (1989)

54% (1988)

51% (1985)

47% (1995)