70% (1989)

68% (2003)

66% (1999)

62% (1991)

68% (2004)

72% (2011)

63% (1992)

67% (1995)

69% (1998)

56% (2009)

59% (2007)

65% (2005)

73% (2018)

69% (2023)

62% (2015)

66% (1987)

64% (1986)

61% (2008)

57% (1998)

0% (2009)