62% (2005)

55% (2018)

53% (2016)

63% (2009)

59% (2010)

65% (2007)

66% (2010)

62% (2008)

54% (2007)

45% (2008)

58% (2002)

66% (1989)

53% (2010)

72% (2015)

60% (1981)

69% (2009)

54% (2009)

77% (2005)

54% (2008)

52% (2014)