74% (1991)

80% (1995)

66% (2001)

78% (2002)

57% (2004)

75% (1995)

74% (2015)

72% (2016)

66% (1999)

70% (2003)

66% (1995)

68% (1992)

67% (2018)

70% (2002)

67% (2015)

62% (2007)

69% (2013)

76% (2003)

59% (2012)

0% (1996)