47% (2002)

67% (2010)

71% (2001)

69% (2010)

65% (2008)

61% (2013)

77% (2015)

66% (2007)

68% (2018)

68% (2005)

62% (1997)

73% (2014)

55% (2006)

64% (2009)

68% (2007)

75% (2012)

70% (2008)

64% (2006)

55% (2008)

56% (2013)