56% (2007)

61% (2009)

52% (1993)

60% (1994)

61% (1997)

85% (1995)

60% (1994)

53% (2007)

65% (2008)

47% (1994)

60% (1987)

64% (2010)

51% (2010)

67% (1992)

0% (1988)

40% (1994)

40% (1994)

80% (2003)

75% (2011)

10% (1995)