51% (2006)

63% (1998)

66% (2019)

60% (2016)

68% (1974)

68% (1976)

72% (1999)

67% (1994)

50% (1993)

54% (1999)

60% (2008)

70% (1969)

77% (1976)

58% (2001)

61% (2016)

70% (2021)

69% (2005)

73% (1959)

71% (1963)

66% (1964)