77% (1998)

61% (2009)

56% (2004)

69% (2008)

64% (2015)

56% (2013)

70% (1999)

62% (2003)

55% (2003)

66% (2005)

58% (2005)

77% (2020)

71% (2010)

64% (2014)

69% (2016)

62% (2009)

52% (2016)

58% (2006)

54% (2007)

67% (2004)