69% (2015)

68% (2005)

58% (2013)

60% (2002)

56% (2010)

59% (2018)

61% (2007)

69% (2017)

66% (2018)

61% (2017)

58% (1999)

53% (2007)

48% (2003)

67% (2005)

74% (2007)

50% (2012)

47% (2002)

55% (1997)

70% (2012)

58% (2011)