62% (1991)

45% (1996)

50% (1990)

66% (1988)

51% (2002)

66% (1995)

55% (2000)

59% (1991)

55% (2001)

40% (1988)

48% (1997)

66% (1995)

22% (1994)

60% (1999)

57% (1990)

48% (2000)

53% (2001)

66% (1991)

43% (1988)

40% (1992)