70% (1981)

75% (1990)

68% (1989)

37% (2016)

58% (2017)

63% (2011)

73% (1996)

59% (2010)

73% (2002)

80% (1989)

66% (2001)

67% (2003)

66% (2002)

61% (2015)

62% (1994)

62% (2019)

61% (2017)

72% (1999)

70% (2006)

68% (2020)