70% (1989)

67% (1995)

68% (2004)

65% (2005)

62% (1991)

68% (2003)

62% (1992)

66% (1999)

56% (2009)

69% (1998)

74% (2018)

60% (2007)

73% (2011)

69% (2023)

65% (1987)

62% (2008)

63% (1986)

62% (2015)

0% (2009)

0% (2018)