81% (1994)

74% (1998)

59% (1999)

67% (2003)

66% (2000)

73% (2006)

59% (1994)

80% (1987)

46% (2000)

77% (1983)

40% (2005)

72% (1982)

0% (2013)

85% (1984)

68% (1996)

70% (1989)

0% (1979)

0% (1994)

68% (1981)

60% (1991)