74% (2015)

49% (2003)

61% (1986)

37% (2001)

66% (1996)

73% (2001)

0% (2006)

79% (1999)

51% (1976)

79% (2002)

90% (2009)

66% (2008)

0% (1981)

75% (1971)

66% (1994)

56% (1968)

67% (1993)

27% (2005)

72% (2016)

30% (1991)