74% (1991)

70% (2012)

71% (1995)

50% (1994)

59% (2003)

64% (1998)

58% (2009)

61% (2002)

47% (2014)

69% (1994)

64% (2003)

40% (2011)

54% (1996)

50% (1999)

65% (1992)

65% (1996)

59% (1992)

68% (1994)

68% (1989)

67% (1999)