67% (2001)

46% (2002)

57% (2000)

60% (1991)

50% (1992)

50% (1998)

50% (1991)

65% (1989)

43% (1999)

0% (1992)

43% (1995)

62% (1998)

51% (2001)

40% (1994)

32% (1998)

40% (1990)

54% (2000)

63% (1997)

50% (1992)

50% (2001)