59% (2009)

0% (1967)

20% (2001)

40% (1982)

73% (1982)

62% (1986)

0% (1968)

65% (1988)

61% (2008)

0% (1972)

30% (1999)

60% (2011)

48% (2015)

46% (2007)

20% (2000)

66% (1995)

60% (2003)

69% (2005)

67% (1981)

0% (1993)