77% (1999)

64% (2002)

70% (2010)

66% (1998)

70% (2011)

69% (2010)

69% (2016)

66% (2006)

70% (2009)

61% (2014)

62% (2005)

63% (2021)

64% (2012)

69% (2016)

73% (2000)

67% (1994)

59% (1990)

51% (1994)

75% (1992)

58% (2003)