75% (1993)

64% (2004)

54% (2001)

56% (2005)

72% (1978)

55% (2000)

56% (2011)

75% (1990)

62% (2013)

68% (2018)

62% (1987)

54% (1994)

67% (2005)

68% (1981)

60% (2002)

77% (1944)

61% (2008)

63% (1984)

67% (1988)

73% (1995)