78% (1979)

57% (2000)

70% (2001)

70% (2000)

0% (2011)

64% (2004)

70% (1993)

70% (1999)

60% (2006)

60% (2006)

45% (1997)

80% (2004)

60% (2000)

65% (2003)

60% (2003)

0% (2008)

48% (1995)

69% (1993)

80% (2004)

85% (1976)