78% (2003)

66% (2000)

61% (2010)

68% (2015)

65% (2009)

64% (2002)

62% (2011)

60% (2016)

54% (2018)

60% (2007)

62% (2008)

60% (2002)

58% (2005)

68% (2017)

46% (2004)

63% (2001)

64% (2007)

61% (2014)

63% (2001)

67% (2007)