67% (1999)

64% (2000)

56% (2003)

69% (2010)

73% (2016)

62% (2011)

55% (2018)

56% (2017)

62% (2008)

57% (2007)

59% (2002)

59% (2006)

57% (2000)

56% (2002)

62% (2001)

68% (2015)

63% (2014)

57% (2005)

53% (1996)

65% (2009)