53% (2004)

67% (1999)

71% (1995)

69% (1995)

78% (2009)

62% (1980)

67% (1981)

71% (2016)

66% (2009)

72% (2020)

57% (1996)

68% (1988)

58% (2002)

69% (1999)

56% (2006)

68% (1994)

66% (1997)

68% (2000)

73% (2001)

61% (2021)