71% (1993)

85% (2011)

57% (1992)

68% (2012)

62% (2010)

75% (2009)

64% (2011)

81% (2005)

73% (1998)

61% (2009)

51% (1998)

69% (2011)

72% (2018)

75% (1984)

72% (1995)

66% (2012)

68% (2009)

59% (2014)

51% (2003)

45% (1999)