63% (1988)

67% (1994)

64% (2002)

60% (2019)

69% (2011)

63% (2018)

62% (1998)

59% (2010)

62% (2021)

54% (1978)

66% (1975)

65% (1996)

41% (1970)

63% (1978)

71% (1999)

67% (1992)

52% (1982)

70% (1997)

61% (2023)

59% (2008)