51% (2008)

63% (1992)

56% (2019)

59% (1984)

54% (1974)

54% (1978)

66% (1989)

47% (1998)

56% (2011)

42% (1978)

66% (2001)

68% (1986)

56% (1996)

77% (2016)

70% (1994)

43% (2015)

72% (2009)

68% (1986)

82% (1998)

71% (2021)