62% (2004)

60% (2010)

55% (2002)

42% (1992)

60% (2009)

69% (1996)

60% (1997)

50% (1990)

66% (2010)

65% (2002)

61% (2005)

67% (1990)

53% (2005)

54% (1990)

51% (2010)

52% (2008)

95% (1996)

33% (1992)

72% (2003)

62% (2005)