72% (1998)

74% (1993)

65% (1995)

68% (1994)

76% (1991)

63% (2009)

63% (1999)

69% (1998)

41% (2008)

65% (2018)

57% (2002)

66% (2001)

70% (2003)

62% (2008)

44% (2010)

59% (1995)

61% (2006)

53% (2011)

63% (2018)

64% (1992)