72% (1991)

58% (2012)

77% (2008)

45% (2009)

70% (1996)

75% (2017)

69% (2011)

85% (2002)

65% (2016)

38% (2009)

57% (2014)

50% (2001)

83% (1997)

58% (2000)

66% (1993)

65% (1998)

60% (1987)

75% (2014)

72% (2012)

50% (2009)