54% (1990)

67% (2003)

66% (2010)

60% (2009)

60% (2010)

95% (1996)

53% (2005)

72% (2003)

51% (2010)

46% (1995)

62% (2005)

58% (1996)

50% (1995)

62% (2004)

61% (2005)

58% (2006)

55% (1999)

69% (1996)

36% (1997)

67% (1990)