50% (1980)

79% (1999)

50% (2003)

39% (2001)

48% (1976)

61% (1986)

66% (2008)

72% (2001)

77% (2002)

67% (1996)

30% (1991)

53% (2018)

66% (1994)

67% (1993)

0% (2006)

72% (2016)

55% (1968)

62% (1994)

92% (2009)

50% (1969)