72% (1986)

67% (1997)

58% (2006)

65% (1999)

56% (1995)

73% (1983)

55% (2001)

67% (1989)

68% (1991)

76% (1980)

63% (2015)

69% (1993)

45% (2007)

73% (2005)

80% (2014)

50% (2008)

45% (2010)

70% (2022)