72% (2013)

71% (2000)

77% (1997)

65% (2007)

72% (2003)

71% (1996)

75% (1999)

74% (1991)

70% (2010)

76% (2002)

70% (2008)

68% (2017)

68% (2004)

60% (2005)

60% (2004)

69% (2015)

65% (2017)

71% (2008)

57% (1995)

63% (2007)