70% (2012)

73% (1991)

68% (1994)

53% (2007)

68% (1994)

44% (1992)

65% (1999)

47% (2014)

69% (1996)

48% (1999)

63% (2003)

65% (1996)

65% (1989)

71% (1995)

63% (1998)

60% (2009)

57% (2006)

40% (2011)

59% (1992)

59% (2003)