74% (2000)

71% (2000)

59% (1998)

72% (1990)

58% (2002)

71% (2012)

55% (2009)

61% (2003)

53% (1991)

64% (2005)

60% (2001)

43% (1992)

66% (2001)

60% (2007)

30% (2012)

58% (2003)

73% (1995)

66% (2000)

60% (2005)

65% (2008)