67% (1997)

69% (1993)

56% (1995)

65% (1999)

55% (2001)

72% (1986)

68% (1991)

58% (2006)

75% (1980)

62% (2015)

72% (1983)

73% (2005)

50% (2008)

67% (1989)

45% (2007)

45% (2010)

80% (2014)

70% (2022)