68% (1987)

67% (2018)

65% (2021)

69% (2006)

53% (2015)

67% (2005)

58% (2003)

58% (1990)

60% (2006)

50% (2006)

64% (1995)

62% (2005)

66% (2007)

62% (1970)

72% (1982)

69% (2003)

79% (2022)

67% (1998)

57% (1999)

69% (1949)