73% (1984)

49% (1987)

58% (1996)

64% (1986)

61% (1993)

63% (1991)

67% (1986)

58% (2003)

67% (1989)

71% (1985)

55% (1985)

0% (1998)

63% (1987)

0% (1990)

57% (1993)

68% (1986)

90% (2007)

57% (1995)

60% (2013)

65% (1986)