73% (2001)

78% (2012)

73% (1997)

71% (2005)

75% (2009)

62% (2021)

62% (2017)

66% (2017)

75% (1989)

58% (2014)

69% (1992)

61% (1997)

70% (1995)

56% (2010)

61% (2003)

69% (2012)

68% (2008)

50% (1994)

57% (2008)

0% (1986)