46% (1989)

45% (1996)

10% (1990)

57% (1991)

48% (1999)

40% (1992)

62% (1994)

45% (1988)

54% (1992)

40% (1992)

50% (1993)

37% (1997)

30% (1991)

52% (1996)

50% (1991)

51% (1996)

51% (1998)

60% (1990)

35% (1993)

58% (1990)