70% (2000)

61% (2005)

80% (1997)

74% (1993)

0% (1984)

74% (1999)

70% (1989)

10% (1998)

70% (2007)

60% (1983)

70% (2005)

68% (1971)

78% (1968)

0% (1964)

60% (1979)

50% (1982)

67% (2004)

62% (1995)

75% (1988)

0% (1996)