69% (1993)

54% (1988)

70% (2018)

51% (2007)

68% (2010)

69% (1997)

60% (1986)

57% (2011)

62% (1972)

49% (1994)

60% (1993)

56% (2011)

55% (2000)

61% (2019)

64% (1970)

65% (2017)

47% (1997)

68% (2011)

64% (2008)

62% (2007)