60% (2008)

58% (2016)

62% (2010)

61% (2014)

63% (2009)

54% (2011)

56% (2017)

69% (2008)

51% (2017)

58% (1997)

49% (2018)

47% (2002)

37% (2013)

54% (2006)

53% (2010)

56% (2015)

60% (1991)

53% (2005)

59% (2012)

61% (1995)